單項(xiàng)選擇題We have had a new computer system（）

A.install
B.installed
C.installing
D.to install


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1.單項(xiàng)選擇題I never（）to bed so late.

A.got used to going
B.used to going
C.got usedto go
D.used going

2.單項(xiàng)選擇題We're having some（）problems with our new computer.

A.teeth
B.tooth
C.teethe
D.teething

3.單項(xiàng)選擇題My（）surprise was soon replaced by delight.

A.first
B.starting
C.beginning
D.initial

4.單項(xiàng)選擇題What did you type in? The computer screen showed（）message.

A.error
B.an error
C.wrong
D.mistaken

5.單項(xiàng)選擇題We can't tell you the results until we have looked at（）

A.all the datum
B.the all data
C.all the data
D.the all datum