I’m going to be an English teacher and ______ English every day.

Everyone in our class played a part _________ our next trip.

The world’s population is getting larger and larger,so scientists are trying to ______ new ways to solve the food shortage.

Do you think we can get there on time?—Yes,_________ the bus does not break down

15 With the development of West China, many technicians are _____ needed there in recent years