Fill in the blanks.
1. They have built a new plant. It …………………….. crude oil into gasoline.
Correct!
Wrong!
2. This medicine will dilate the blood vessels and ……………………… clotting.
Correct!
Wrong!
Will dilate and (will) prevent - when we connect two infinitives with and, we usually omit the second to.
3. The chemist ……………………….. for years to create a waterproof glue.
Correct!
Wrong!
Use the simple present to talk about finished events in the past.
4. The government ………………………. a new agency for agriculture.
Correct!
Wrong!
We use the present perfect to give news.
5. Clothing styles ………………………. dated very quickly.
Correct!
Wrong!
Use the simple present to talk about facts.
6. He ………………………… her for two years.
Correct!
Wrong!
Use the present perfect continuous to talk about an action or situation that started in the past and has continued up to the present.
7. The police are looking for a woman who …………………………. her children.
Correct!
Wrong!
8. It is easy to get despondent when plans ……………………. awry.
Correct!
Wrong!
9. The wreck …………………………… by the detachment of two cars from the train.
Correct!
Wrong!
A passive verb is required here.
10. They have invented a device that automatically .......................... doors when it …………………………..
Correct!
Wrong!
11. He was so hungry that he ……………………….. several helpings.
Correct!
Wrong!
When the main verb is in the past tense, use a past tense in the subordinate clause as well.
12. He is a diligent worker and …………………………….. the promotion.
Correct!
Wrong!
Answers
- They have built a new plant. It converts crude oil into gasoline.
- This medicine will dilate the blood vessels and prevent clotting.
- The chemist worked for years to create a waterproof glue.
- The government has created a new agency for agriculture.
- Clothing styles become dated very quickly.
- He has been dating her for two years.
- The police are looking for a woman who deserted her children.
- It is easy to get despondent when plans go awry.
- The wreck was caused by the detachment of two cars from the train.
- They have invented a device that automatically closes doors when it rains.
- He was so hungry that he devoured several helpings.
- He is a diligent worker and deserves the promotion.
