You’d better_ your scores and see if you have passed the exam.
| A．add up | B． add up to | C．add to | D．added up |
We want to encourage the students ________ the teaching.
| A．to participate in | B．participate in |
| C．participating | D．participate to |
What he said was not relevant _________ the matter in hand.
| A．in | B．to | C． for | D．at |
Those _________may leavetheclassroomnow.
| A．whohasfinished | B．whohavefinished |
| C．havefinished | D．whomhavefinished |
When they saw the police car, the attackers turned and ________ .
| A．flee | B．fleed | C．fled | D．slipped |
The classroom wants __________.
| A．clean | B．cleaned | C．to clean | D．cleaning |