A recent research shows that there _____ volcanic activities on the moon and Mars. However, they no longer exist now.
| A．had been | B．has been | C．were | D．would be |
You’d better _______ your score and see if you have passed the exam.
| A．add up to | B．add to |
| C．add up | D．add |
Jackson has got to be crazy ________Chinese culture since he visited China last time.
| A．about | B．with | C．for | D．at |
He has three brothers, ________is a doctor.
| A．all of them | B．all of who |
| C．none of whom | D．both of them |
___________ catch the early bus, he got up very early this morning.
| A．In order to | B．So that |
| C．So as to | D．In order that |
Our school was ________ in 1925 and has a history of more than 80 years.
| A．set up | B．set off |
| C．set out | D．found |