We agreed to accept__________they thought was the best professor in the college.

What has he been doing _________? I haven’t seen him much recently

It is rather difficult to make friends with him, but his friendship, _________ is more true than any other’s[ ]

Tom, look! It’s 12 o’clock at night. _____ you shout so loudly?

We had fun ________ the robots do many different kinds of things.