It is obvious to the students ______ they should get well prepared for their future.
| A．as | B．which | C．whether | D．that |
Nuclear power will___our health and safety if improperly used
| A．do harm to |
| B．do good to |
| C．do wrong to |
| D．do use to |
But for the help of John,he___last night
| A．must have drowned |
| B．would have drowned |
| C．was drowned |
| D．may have drowned |
There was no taxi that day and I could do nothing but___there for another night
| A．stay |
| B．to stay |
| C．staying |
| D．having stayed |
The problem is___but easy.I can’t work it out
| A．anything |
| B．something |
| C．nothing |
| D．everything |
The number of guests invited to the party___fifty,but a number of them ___absent for different reasons,which made him very disappointed
| A．were;was |
| B．was;was |
| C．was;were |
| D．were;were |