If you are weak ____ a subject, ______your teacher for advice can help.
There are ______visitors in Hangzhou every year.
Tom is very clever________ maths and English. [ ]
What do you think of the EXPO 2010?— It’s great, of course. people are going to Shanghai for the EXPO 2010.
Anna can’t go to school these days . —____________? —Because she is in____________ hospital now.