一Did Tom enjoy seeing his old friends yesterday?
—Yes，he did．He _____ his old friends for ages．
| A．didn’t see | B．wouldn’t see |
| C．hasn’t seen | D．hadn’t seen |
Scientists study ___________ human brains work to make computer.
| A．when | B．how | C．that | D．whether |
A girl on the bus begin to sing a pop song and soon all the other students _________.
| A．majored in | B．joined in | C．came in | D．handed in |
---Why were you late for school today?
----It was ________ I help catch a thief on the bus.
| A．since | B．as | C．for | D．because |
To tell the truth, it’s the first time that I _______ western food.
| A．had | B．had had | C．have | D．have had |
I have the details _________ here in my notebook , which you can refer to.
| A．set off | B．get on | C．set down | D．get down |