—Why did Mr. Green take his 7th grade students to the river yesterday afternoon?
—________ the river.
A.Cleaned up | B.Cleaning up |
C.To clean up | D.Clean up |
When a customer withdraws money from the bank, it is required to leave his signature. But how can we be sure it is_______?
A.absolute | B.alternative | C.academic | D.authentic |
Considering the time limits, we also provide CDs ________ our students may prefer to study at home.
A.so that | B.so long as | C.in case | D.as if |
If you’re in Florence, Italy and see a man on a ladder ________ the dust off statues and buildings, don’t worry. It’s just Alessandro Ricci ________ material for his famous smog painting.
A.wipe; accumulating | B.to wipe; to accumulate | C.wiping; gathering | D.wipes; to gather |
Wow, you are in high spirits. _________ makes you so happy?
A.What it is that | B.What is it that | C.What is that | D.What it that |
I don’t smoke now, but I _______ for more than twenty years.
A.smoked | B.was smoking | C.have smoked | D.had smoked |