Who is it______have the most important role to play in stopping Yellow River erosion? A,who B.that C.which D.whom
You must keep your eyes _________ when you do eye exercises.
Five days has passed , but I haven’t finished half of the work. ________,
Don’t worry, sir. I’m sure I can run _________ to catch up with them.
The text is very easy for you. There are ________ new words in it.
It’s such an ________ film that all the students are ______ in it.