The plant is dead. I ______it more water.
| A．will give | B．would have been | C．must give | D．should have given |
---- One more question, Sir?
----Wait a minute. I ____ your questions for more than 30 minutes without a break.
Where is my cup?
| A．have been answering | B．have answered |
| C．had answered | D．answered |
The fire _______ before the fire-fighters arrived.
| A．has been put out | B．was put out | C．had put out | D．had been put out |
There is ______ what the weather will be like.
| A．not knowing | B．no knowing | C．not known | D．no known |
______ over and over again, but he still couldn’t understand.
| A．Having explained | B．Having been explained |
| C．Explaining | D．It had been explained |
Public attention at the moment is ______ on the problem of how to create
opportunities for the laid-off workers.
| A．focused | B．paid | C．attracted | D．concerned |
．The news came as no surprise to me. I ______ for some time that I would fail in the exam.
| A．had known | B．knew | C．have known | D．know |
．The moment I got home, I found I _______ my jacket on the playground.
| A．had left | B．left | C．have left | D．was leaving |
Sorry, these two tables are already ______. You may book the one over there.
| A．preserved | B．deserved | C．observed | D．reserved |
Hurry up, or the tickets ________out by the time we get there.
| A．will have sold | B．will sell | C．have sold | D．will have been sold |