The place_____ the bridge is supposed to be built should be _____ the cross-river traffic is the heaviest.

People all over the country ______ money to those who suffered from the terrible disaster.

It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.

We’ll go early，we may not get a seat

Mike went boating with his friends lastweekend. They ______ a good time.