Nothing could prevent ________ out against injustices．

A．his speaking

B．him to speak

C．him against speaking

D．that he speaks

The boss demanded that workers ________ the rules in his company．

A．obeyed

B．to obey

C．obey

D．obeying

My son set out ________ questions when I set about ________ lessons．

A．asking; preparing

B．to ask; to prepare

C．asking; to prepare

D．to ask; preparing

Tom is good at his work, but he seems to ________ confidence．

A．lack

B．lack of

C．lacking in

D．short of

Come and see me whenever ________．

A．you are convenient

B．you will be convenient

C．it is convenient to you

D．it will be convenient to you

Only when the war was over in 1945 ________ to get a college education．

A．he was able

B．he is able

C．was he able

D．is he able．

________ from space, the earth, with water ________ seventy percent of its surface, looks like a blue ball．

A．Seen, covering

B．Seen, covered

C．Seeing, covering

D．Seeing, covered

With his hands ________ behind his back, he was taken to court．

A．being tied

B．tied

C．having tied

D．to be tied

________ in thought, he didn't hear what his mother was saying．

A．Losing

B．To lose

C．Lost

D．Having lost

Would you like to see the plan ________?

A．to carry out

B．carrying out

C．carried out

D．having carried out