Onhearingagreatnoise,Mikelookedforwardthroughthewindow_____whathappenedoutsidetheroom.
A、toseeingThisrobotissupposedtosavealotoflabor,butitremainsaproblemifit______.
In fact Peter would rather have left for San Francisco than ____ in New York.
Thegreatuseofschooleducationisnotsomuchtoteachyouthings_____toteachyoutheartoflearning.
You ____ him so closely; you should have kept your distance.
Tina_____haveknownthetruth,orshewouldhavetoldus.
