1.John was(
)his head on hid hands at his desk bacause he had failed in the driving test a second time.
A、was resting B rested
这里为什么不能用B要用A？ at his desk 这里at是为什么？
2.run the gauntlet of hostility 这里的run 是什么意思什么用法？
3.be puzzled from 是什么情况下用？
4..The policeman (
) to the bus to move forward slowlyA。signedB。signaled
这里为什么用A不用B？B错在哪里？
