--- How long do you think it’ll be ______ I can go back to work?--- Well, you’ll be feeling better by next weekend.
The teacher and writer, as well as many guests ________ invited to the party held yesterday.
He walked _________ the bridge, pushed his way ________ the crowd of people and soon came to a hut.
His words puzzled me so much that I had a hard time trying to ______ what he really meant.
The fact has worried many scientists_______ the earth is becoming warmer and warmer these days.
Seeing the happy ______ of students playing basketball there, I can’t help thinking of my school years.