1. A: It's hot in here. B: __________ open a window.

I'll I'm going to I'm

2. When _________ your job?

have you started did you start have you starting

3. He __________ in his eighties. He looks too young.

must be can't be should be

4. I __________ drink coffee six times a day but now I don't drink so much.

must usually used to

5. She's __________ most beautiful person I know.

the a an

6. You must remember ___________ Mohammed an email or he'll be angry.

sending to send sent

7. "What do you do?" She asked me what __________.

I am doing I did if I do

8. __________ glasses invented in China?

Are Were Is

9. If he hadn't learned the piano, he __________ famous.

wouldn't have become wouldn't become wouldn't became

10. Do you know what time __________?

does the shop open the shop opens shop opens