There are __________ students in the school. But I don't know __________ the girls among them.
| A．a number of; a number of |
| B．the number of; the number of |
| C．a number of; the number of |
| D．a number; a number |
We will never forget the factory _______ we worked last year.
| A．where | B．that | C．in that | D．of which |
Can you lend me the magazine _____ last week?
| A．you bought it | B．that you bought |
| C．that you bought it | D．which you bought it |
The old lady lives in a house ______ windows are broken.
| A．which | B．whose | C．what | D．that |
These photos reminded him of the places _____he visited last year.
| A．which | B．that | C．不填 | D．all above |
— Have you finished all your homework?
— Of course. I ________ it before I went out to play football.
| A．had finished | B．have finished | C．finished | D．was finishing |