--- Why does the lake smell terrible?--- Because large quantities of water ________

--- Why does the lake smell terrible?--- Because large quantities of water _________.

#101273

have polluted

is being polluted

has been polluted

have been polluted

推荐题目

The skirt is too big for me. I wish I _______ it last Sunday.

#103099

wouldn’t buy

hasn’t bought

didn’t buy

hadn’t

Large quantities of fish _______ in the river in the past few days.

#103854

were caught

was caught

has been caught

have been caught

I asked him to come at 8 o’clock, but he _________. It’s already 9 now.

#102520

didn’t show up

hasn’t shown

hadn’t shown

wasn’t showing up

 --How is your grandfather now?--Oh, he _______for two weeks.

#103043

died

has died

dead

has been dead

By the time he ____ at the party, all the other guests ____ playing games.

#102205

arrived; had begun

arrived; began

had arrived; began

had arrived; have begun

共5993题