When the big bills for mother’s hospital care came, father was glad he had money in the bank to _____.

Students should _____ everything important their teachers give in class.

一Professor Li, ______the student start at once or wait a while?一At once.

We have to stop talking here outside. Listen, ！— Hurry up, or we’11 be late.[ ]

In front of the farmhouse _____. [ ]