Shall we go to Lin Junjie’s concert this weekend– , but I’ll have to prepare for the monthly exam next week.

Some of the students are not sure ___ spelling the word, while others are not sure ___ the use of some grammatical rules

It is said that China has been a member of WTO since December 11, 2001. —Well, it’s wonderful that the Chinese people ______ have made so much progress these years.

When you move somewhere new, the first thing for you is to find a place______.

They had a good preparation (准备) for the project, so they had little ____ all the work. [ ]