Complete the following sentences using if or whether. In some cases they are both possible.
1I am not sure ............... I will have the time.
Select 2 answers.
Wrong!
"Whether" and "if" can both introduce an indirect yes/no question after "I am not sure."
2She asked me ............... I was working.
Select 2 answers.
Wrong!
"If" and "whether" can both introduce an indirect yes/no question after "asked me."
3We discussed ............... we should throw a party to celebrate the occasion.
Wrong!
Use "whether" after "discuss" to introduce a question about possibilities.
4............... she will recognize me, I am not sure.
Wrong!
Use "Whether" when the indirect question comes before "I am not sure."
5There was a big argument about ............... she should resign.
Wrong!
Use "whether" after a preposition such as "about."
6I can’t decide ............... to go on a diet or not.
Wrong!
Use "whether" before an infinitive phrase such as "to go."
7............... she can get along with your mother is another matter.
Wrong!
Use "Whether" when the indirect yes/no question is the subject of the sentence.
8He asked me ............... I had ever been to Europe.
Select 2 answers.
Wrong!
"Whether" and "if" can both introduce an indirect yes/no question after "asked me."
9I don’t know ............... she will come.
Select 2 answers.
Wrong!
"Whether" and "if" can both introduce an indirect yes/no question after "I don’t know."
10Janet is going to marry Charles ............... she likes it or not.
Wrong!
Use "whether" in the fixed expression "whether she likes it or not."
Done.
Score: 0/10
Answers
- I am not sure whether / if I will have the time.
- She asked me if / whether I was working.
- We discussed whether we should throw a party to celebrate the occasion.
- Whether she will recognize me, I am not sure.
- There was a big argument about whether she should resign.
- I can’t decide whether to go on a diet or not.
- Whether she can get along with your mother is another matter.
- He asked me whether / if I had ever been to Europe.
- I don’t know whether / if she will come.
- Janet is going to marry Charles whether she likes it or not.

