Focus ̀ - Unit 1 - Grammar Practice

The government …………….. (invest) a lot of money in environmental research at the moment.

(a)  

Answer explanation

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We …………….. (campaign) against sweatshops for over five years.

(a)  

This experience …………….. (teach) me that I am stronger than I thought.

(a)  

It's 6 p.m. and I'm going to start work now. By 9 p.m. I …………….. (study) for three hours.

(a)  

When we saw the tiger, we …………….. (walk) for hours.

(a)  

We …………….. (do) our exam this time next week.

(a)  

While the scientists …………….. (research) the problem, an inventor found a solution.

(a)  

We've never met Mary because she …………….. (move) to China by the time we arrived.

(a)  

I started work at 8 a.m. and it's now 11 a.m. I …………… really hard all morning.

• work

• am working

• was working

• have been working

By the time the concert started, we …………… for two long hours.

• are waiting

• have waited

• had been waiting

• were waiting