單項選擇題（）every day for 20 minutes.

A.Exercise
B.To exercise
C.Should exercise
D.Exercising


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你可能感興趣的試題

1.單項選擇題I tried（）the book in a few days, but actually I couldn't, just because of too much work for me.

A.finish
B.finishing
C.to have finished
D.finished

2.單項選擇題Although I am a good swimmer, I don't like（）in the sea.

A.swim
B.swimming
C.to be swimming
D.to go to swim

3.單項選擇題I stopped（）last year.

A.smoking
B.smoke
C.to smoke
D.smoked

4.單項選擇題The picture is pleasant（）

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

5.單項選擇題Please stop（）.It cannot help the situation.

A.to shout
B.shouting
C.to speak
D.speaking