Weweretoldnottotouchtheequipme

We were told not to touch the equipment in the laboratory unless ________.

A．allowed to do

B．allowing to do

C．allowed to

D．allowing to

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Despite the fact that all three teams ________ different approaches to the problem, they were all immediate successes．

A．adopted

B．attained

C．adapted

D．attached

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This machine is very easy ______. Anyone can learn to use it in a few minutes.

A．operating

B．to be operating

C．operated

D．to operate

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A．of studying

B．to study

C．to studying

D．of to study

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A．more than

B．rather than

C．other than

D．less than

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You can imagine what great trouble we had ______ the new school.

A．setting up

B．to set up

C．set up

D．to setting up

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