Tom, look! It’s 12 o’clock at night. _____ you shout so loudly?
| A．Can | B．Shall | C．Will | D．Must |
We laugh at jokes，but seldom about how they work．
| A．we think | B．think we | C．we do think | D．do we think |
_____ playing dumb with teachers. They know very well their students.
| A．It’s no use | B．There is no doubt | C．It’s no wonder | D．There is no need |
They thought my suggestion reasonable _______a few experts to help them.
| A．that we sent | B．we should send | C．we would send | D．that we send |
_____but he still couldn’t understand the logical connection of the two subjects.
| A．Having told many times | B．Having been told many times |
| C．He was told many times | D．Many times as he was told |
It was not until he came back _____ he knew the police were looking for him.
| A．which | B．since | C．that | D．before |