—How much is _____ for a schoolbag?— Experts say students should carry _____ more than 10% of their body weight.
The zoo will have to close ________ the local government agrees to give extra money.
Wait till I turn on my computer, _____ there is his telephone number.
You have to pass a driving test_____ you can get a license A before B until C when D since
What impresses me most is ______ he appears in front of others, he wears a sincere and charming smile. A.which B.that C.where D that whenever
____ difficulties we meet, we can work them out.