Complete the 12 sentences below. Choose the best answer for each one.
1If you're worried about the results, you ............... call the doctor this afternoon.
Wrong!
Use "should" for friendly advice; "must" is too strong for this gentle suggestion.
2You ............... drink so much coffee at night; it will keep you awake.
Wrong!
Use "shouldn't" to give negative advice; "don't have to" means it is not necessary.
3For the class picnic, everyone ............... bring something to share.
Wrong!
Use "ought to" to say what is the right or sensible thing to do; "may" gives permission.
4The bus left an hour ago, so it ............... be home by now.
Wrong!
Use "should" for something you expect to be true; "has to" means obligation.
5The application closes on Friday, so you ............... send the form today.
Wrong!
Use "should" because the deadline makes it the advisable action; "could" only says it is possible.
6There's a warning sign, so we ............... park near the entrance.
Wrong!
Use "shouldn't" for advice not to do something; "might not" means maybe not.
7Before you sign the contract, you ought ............... ask your manager to read it.
Wrong!
After "ought", use "to" before the base verb: "to" is correct here.
8Visitors ............... ignore the safety rules in the laboratory.
Wrong!
The standard negative form is "ought not to" before the base verb.
9It's cold outside, so you ............... wear a warm coat.
Wrong!
Use "should" directly before the base verb; "ought" needs "to" before the verb.
10For the job interview, you ............... arrive ten minutes early because parking is difficult.
Wrong!
Use "should" for advice about the best action; "will" only predicts the future.
11He was rude to Mia, so he ............... apologise to her.
Wrong!
Use "ought to" when saying what is morally right or responsible; "can" only means ability or possibility.
12It wasn't her fault, so she ............... be upset about the mistake.
Wrong!
Use "shouldn't" to advise against a feeling or action; "doesn't need to" means it is not necessary.
Done.
Score: 0/12
Answers
- If you’re worried about the results, you should call the doctor this afternoon.
- You shouldn’t drink so much coffee at night; it will keep you awake.
- For the class picnic, everyone ought to bring something to share.
- The bus left an hour ago, so it should be home by now.
- The application closes on Friday, so you should send the form today.
- There’s a warning sign, so we shouldn’t park near the entrance.
- Before you sign the contract, you ought to ask your manager to read it.
- Visitors ought not to ignore the safety rules in the laboratory.
- It’s cold outside, so you should wear a warm coat.
- For the job interview, you should arrive ten minutes early because parking is difficult.
- He was rude to Mia, so he ought to apologise to her.
- It wasn’t her fault, so she shouldn’t be upset about the mistake.

