Now the air in our city is _______ than it used to be. Something must be done to stop it.
____________ he exercises every day, _____________ he is very healthy. A. Because; / B. Because; so C. Though; /
Our English teacher _____________ to Martin when I entered the classroom this morning. A. is talking B. was talking C. talked
I got up early in the morning _____________ I could catch the first early bus to Guangzhou. A. so that B. as soon as C. when
--- I visited a middle school in Shanghai last month. ---There were about six _____________ students in it. A. thousands B. thousands of C. thousand
---How do you know this _____________ child is telling a lie? --- From her expression. A. five-year-old B. five year old C. five-years-old