________ the morning train, he would not have been late for the meeting.

A. Did he catch              B. should be catch

C. has he caught              D. Had he caught

Bach died in 1750, but it was not until the early 19th century____ his musical gift was fully recognized.

A. while            B. though

C. that             D. after

Only after talking to two students ________ that having strong motivation is one of the biggest factors in reaching goals.

A. I did discover           B. did I discover

C. I discovered             D. discovered

Always ________ in mind that your main task is to get this company running smoothly.

A.to keep                B.to have kept

C.keep                   D.have kept

________   makes the book so extraordinary is the creative imagination of the writer.

A. That             B. What

C. Who              D. Which

From space, the earth looks blue. This is    ________  about seventy－one percent of its surface is covered by water.

A．why                 B．how

C．because             D．whether

It's good to know   ________ the dogs will be well cared for while we're away.

A. what               B. whose

C. which              D. that

Do not let any failures discourage you, for you can never tell ________ close you may be to victory.

A. how              B. that

C. which              D. where

________struck me most in the movie was the father's  deep love for  his son.

A．That                B．It

C．What               D．Which

It remains to be seenthe newly formed committee’s policy can be put into practice.

A. that             B. which

C. what              D. Whether