The world’s population is getting larger and larger, so scientists are trying to _______ new ways to solve the food problem.
| A．catch up with | B．keep up with | C．come up with | D．make up with |
Let’s buy some more books this afternoon.
| A．other books | B．another some books |
| C．many books | D．some another books |
—Would you please pass me the sugar?
— ____. Here you are.
| A．Sure | B．Nothing much | C．Thanks a lot | D．Sorry |
In our school library there ____ a number of books on science and the number of them ____ growing larger and larger.
| A．is; are | B．are; is | C．is; is | D．are; are |
It’s said that Armstrong sent a message to Mission Control _____ said that two huge, strange objects landed near them and were watching them.
| A．who | B．which | C．whom | D．whose |
— It is so hot in the classroom. Would you mind ____ the windows?
—OK. I’ll do it right now.
| A．not closing | B．not opening | C．opening | D．closing |