It is the telephone _________ the world different from _________. A: which has made …it was B: that makes …what it was C: that has made …what it was D: which has made …what it were

What was the author in the passage particularly impressed by?

In the survey,we asked the workers about things made their work harder to do. A: what B: that C: who

They lost their way in the forest and ____ made matters worse was ___ night began to fall. A: what; that B: it; that C: what; when D: which; what

The clever boy made a hole in the wall, ______ he could see ______ was going on inside house. A: which; what B: through which; what C: through that; what D: what; that