He failed the mid-term examination and only then________how much time he had wasted.
A.he realized | B.did he realize |
C.he had realized | D.had he realized |
environmental damage is done, it takes many years for the ecosystem to recover.
A.Even if |
B.If only |
C.While |
D.Once |
---Could you do me a favour?
----It depends on it is.
A.which |
B.whichever |
C.what |
D.whatever |
There have been several new events to the programme for the Olympic Games.
A.add |
B.to add |
C.adding |
D.added |
tomorrow, our ship will set sail for Macao.
A.However the weather is like |
B.However is the weather like |
C.Whatever is the weather like |
D.Whatever the weather is like |
----She looks very happy. She have passed the exam.
-----I guess so. It’s not difficult after all.
A.should |
B.could |
C.must |
D.might |