Mr. Wang came home so thin and weak that his own children hardly______ him.
| A．knew | B．realized | C．recognized | D．noticed |
Treat______ to _____tea to help you relax at the end of the woek.
| A．on; a | B．oneself; the | C．you; / | D．yourself; a |
He wanted to pass the exam and styed up very late, this_____ creates further problems.
| A．in turn | B．in case | C．in doubt | D．in short |
Mary passed the driving test,_____ surprised everyone in the office.
| A．which | B．what | C．this | D．it |
---- Did you visit the Big Ben in London?
---- No, we ______ it, but we spent too much time shopping.
| A．could visit | B．could have visited | C．must ahave visited it | D．can have visited |
. _____is known to us all, America is a developed country____ the first world.
| A．As; belonging | B．which; belonged | C．as; belonging to | D．which; belonged to |