There are________bears on the earth because they have________space on it.
——Is she _______________ in Geography? ——No, she isn’t. She shows no ______________ in this subject.
I don’t know if it _________ tomorrow. We won’t go shopping if it ____________.
——Now lots of teenagers spend a lot of time playing computer games. ——Yes. Teachers and their parents should prevent them ______________ too much.
——Is she a hard-working student?——Yes, she is. She studies ______. She is also good at PE. She runs very______.
——Yes, it’s said that 80 per cent of fish in this river ________ live long.