Effective measures should ________ and laws should _______ to protect pandas. Otherwise, they are certain to die out.
A.be taken; be passed |
B.take; pass |
C.be made; be taken |
D.be set; be made |
The tree over there is so tall that I suppose it _______ nearly twenty metres.
A.measures |
B.is measured |
C.measure |
D.to be measured |
On arrival, the famous movie star found himself _______ by the enthusiastic fans.
A.to be surrounded |
B.surrounded |
C.being surrounded |
D.having surrounded |
Modern science has given clear evidence ________ smoking can lead to many diseases.
A.what |
B.which |
C.that |
D.where |
When the news came ________ the war broke out, he decided to serve in the army.
A.since |
B.which |
C.that |
D.because |