—What are you going to give your mother for her birthday? —I’m not sure. But I’ll buy her ________
—__________ people are there in the meeting room?—About 200.
It’s quite late now, __________ Xiao Ming is still busy with his lessons.
I visit my grandparents __________ Saturday afternoon.
The students are from England and __________ maths teacher is from China.
There are so many foggy days these days. We all wonder .A. how is the air polluted B. why the air is polluted seriouslyC. what are the real reasons