--- Mike, what did our monitor say just now? --- Every boy and every girl as well as the teachers who _____ to visit the museum _____ asked to be at the school gate before 6:30 in the morning.
He is a man of great knowledge, ___much can be learned.
Now we can fly to Tokyo. There was a time ________ we had to take a boat.
The world ______ is made up of matter.
The reason _______ he gives for not coming is that his mother is ill.
If Bob’s wife doesn’t agree to sign the papers, _______.