---Could I have some snacks between meals, mum?---No, you __________.
There are several chemical factories ______ waste water into the river.A. pours B. pour C. pouring
Jim has been to the Great Wall before, ______ he?A. has B. does C. hasn’t
The city has improved a lot _________ I came here a few years ago. A. since B. for C. when
The weather in summer here is cooler than ______ in Beijing.A. this B. that C. it
In our class, about ______ of the students are girls.A. three fifths B. third fifth C. third fifths