1. Neil Armstrong was the first man to ___________ foot on the moon. A. try B. step C. set D. walk 2. Thomas Edison ________ many new appliances using electricity during his long career. A. invented B. inventing C. who invented D. was invented 3. _________ further riot to occur, the government would be forced to use its emergency powers. A. Should B. Did C. Were D. Had 4. Jack doesn't like ________ such gossip and fallacy in sport. A. to take himself on B. to get himself along C. engage himself in D. indulge himself of 5. New York and Tokyo are two of the most _______ populated cities in the world. A. greatly B. densely C. variously D. closely 6. It can take up to more than six months to _______ a man to do this specialized work. A. raise B. train C. learn D. practise

1. Neil Armstrong was the first man to ___________ foot on the moon.

A. try B. step C. set D. walk

2. Thomas Edison ________ many new appliances using electricity during his long career.

A. invented B. inventing C. who invented D. was invented

3. _________ further riot to occur, the government would be forced to use its emergency powers.

A. Should B. Did C. Were D. Had

4. Jack doesn't like ________ such gossip and fallacy in sport.

A. to take himself on B. to get himself along C. engage himself in D. indulge himself of

5. New York and Tokyo are two of the most _______ populated cities in the world.

A. greatly B. densely C. variously D. closely

6. It can take up to more than six months to _______ a man to do this specialized work.

A. raise B. train C. learn D. practise