____ troubles me most right now is____ I can’t remember where I have put my car keys.
| A．That ;what | B．What;that | C．What;what | D．That;that |
The book I bought from the bookstore isn’t here. Who __________?
| A．could have taken it | B．must have taken it |
| C．might take it | D．should take it. |
The official made the demand that the soldiers _____ at once ______ battlefront.
| A．leave; for | B．leave; to | C．left; to | D．to be left; for |
— I will come to attend your lecture at 10:00 tomorrow.
— I’m sorry, by then my lecture will have ended and I _____ in my office.
| A．is being worked | B．will work | C．will be working | D．will have worked |
TheInternetin modern society hasbrought_______greatchangesinour daily life.
| A．about | B．out | C．back | D．up |
Mr Wang went to Nanjing ____ October,1998 and came back home ____ the morning of Nov.5.
| A．at; in | B．on; at | C．in; on | D．by; from |