The professor could hardly find sufficient grounds________ his arguments in favor of the new theory.
| A．on which to base | B．which to base on | C．to base on | D．to be based on |
It was only after I came across that matter_______ how important it was to master a foreign language.
| A．did I realize | B．had I realized |
| C．that I realized | D．when I realized |
--- When shall we meet again, Tom?
--- Make ______ day you like; it’s all the same to me.
| A．that one | B．it any | C．it another | D．that some |
Every athlete as well as some coaches who ____ to go to the Games ____ asked to be here before 7:30 am.
| A．are; are | B．is; is | C．are; is | D．is; are |
His parents both died in the traffic accidents, ________ him a lot of debts.
A．having left |
B．left | C．to leave | D．leaving |
As we all know, looking away from people or yawning will, _______, make us appear to be uninterested.
| A．for one thing | B．by all means |
| C．in most cases | D．at one time |