Every means ____ tried but without any hope.

A. have been
B. is to be
C. are to be
D. has been

The number of deer, mountain lions and tigers ____ much because people leave things as they are.

A. doesn’t change
B. don’t change
C. change
D. changed

请写出句子“Hungry and exhausted, the climbers returned.”中的无动词分句(verbless clause): ____。

请写出句子“I believe him to be innocent.”中的非限定分句(non-finite clause): ____。

In sentence “The children might have been playing in the garden.”, the verb phrase “might have been playing” is a complex verb phrase.

A. 对
B. 错

In sentence “Seeing his beloved girl being intimate with another boy, he has become very furious.”, the verb phrase “being” a is finite verb phrase.

A. 对
B. 错

The sentence “The students I teach have made better grades in the past few weeks.” is a complex sentence.

A. 对
B. 错

In the sentence “The man, wearing such dark glasses, obviously could not see clearly.”, the clause--“wearing such dark glasses”is a nonfinite clause.

A. 对
B. 错

The sentence “What you said is not true.” is a complex sentence.

A. 对
B. 错

Nothing but patient study can make one ______ English idioms.

A. familiar with
B. superior to
C. independent of
D. grateful for