Only when I left my parents for Italy _____ how much I loved them.
| A．I realized | B．I had realized | C．had I realized | D．did I realize |
________cash crops will be produced next year is not yet decided.
| A．It | B．What . | C．That | D．Which |
He is ______ to come back tonight. Then we’ll have a small party.
| A．most like | B．most likely | C．mostly like | D．very much like |
As we all know, Jack is experienced _____ the problem of this kind.
| A．to work out | B．at working | C．at working out | D．for working out |
I could have helped him out, to tell the truth, I _____ too busy.
| A．am | B．was | C．have been | D．had been |
Badminton is a _____ by an Englishman.
| A．game invented | B．play invented |
| C．match inventing | D．match invented |