A．boys students; the B．boy students; theC．boy student; ……

单项选择题—Peter,where did you guys go for the summer vacation—We working for months,so we went to the beach to relax ourselves.

单项选择题David is goodEnglish, but he doesnt do wellPE.

单项选择题.So far we have done a lot to build a lowcarbon economy,but it is ideal.We have to work still harder.

单项选择题—I haven’t got the reference book yet,but I’ll have a test on the subject next month.—Don’t worry.Youhave it by Friday.

单项选择题Thousands of foreigners wereto the Shanghai World Expo the day it opened.

单项选择题The visitors here are greatly impressed by the fact that people from all walks of life are working hard for new Jiangsu.