_______ they_______, their classmates were all in the classroom.
| A．Before ; were arguing | B．When ; are arguing |
| C．While ; were arguing | D．While ; are arguing |
Be ________. Make sure not to make the same spelling mistake next time.
| A．helpful | B．careful | C．useful | D．peaceful |
The football match ________ we watched on TV together yesterday is fantastic.
A. that B who C. when D. why
The yellow coat ________belong to Linda because nobody likes yellow except her.
| A．can’t | B．may | C．must | D．needn’t |
– It’s difficult for the village children to cross the river to get to school.
– We think a bridge ________ over the river.
| A．was built | B．should be built | C．has been built | D．is being built |
– You seem to know much about the city.
– That’s true. I _______ it four times in the last three years.
| A．visited | B．am visiting | C．have visited | D．will visit |