______ has already been pointed out, grammar is not a set of dead rules.

A. As    B. It         C. That      D. This

Nothing in my life has meant ____ to me as his praise.

A、as much B、more　 C、that much D、as good

Because of the _____, we can’t go high up to the mountains without the oxygen tanks.
A. smelly gas   B. cold weather       C. high altitude      D. frozen water

He has made _____ progress thatall of us want to learn from him.

　 A. such a good 　 B. so good a

　 C. a so good 　 D. such good

It was not until dark _____ he found _______ he thought was the correct way to solve the problem.
A. that; what         B. that; that
C. when; that        D. wheal what

The children all turned _______ the famous actress as she entered the classroom.

A. looked at 　　　 B. to look at 　　　　　 C. to looking at 　 D. look at

It was _______ that the tourists wanted to spend more time taking pictures outdoors.

A. so fine weather　 B. such fine weather　 C. so fine a weather　 D. such a fine weather

William found it increasingly difficult to read, for his eyesight was beginning to　　　 .

A.disappear　　 B.fall　　　　　 C.fail　　　　 D.damage

She felt herself _______ by her friends.

　 A．misunderstand 　　　　　　　 B．misunderstanding 　　

　 C．misunderstood 　　　　　　　 D．to misunderstand

The lack of eco-friendly habits among the public is thought to be a major 　　 of global climate change.

A.result　　 B.cause　 C.warning　　 D.reflection