單項(xiàng)選擇題

A computer can only do（）you have instructed it to do.

A.how
B.after
C.what
D.when

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單項(xiàng)選擇題

（）you like some coffee?

A.Will
B.Shall
C.Would
D.Should

單項(xiàng)選擇題

（）she was invited to the hall made her very happy.

A.That
B.If
C.When
D.Because