It’s very hard for Mary to work here, for ______ she does can’t satisfy her boss.
| A．what | B．whatever | C．which | D．whichever |
－When will the expert come and give the lecture on economic development
－Not until our program ____by the government
| A．approves | B．is to approve |
| C．will be approved | D．has been approved |
The question that puzzled them is ____ they can get rid of the air pollution in the area.
| A．how is it that | B．that is how | C．what is that | D．how it is that |
Rock-climbing is a breathtaking activity, very popular nationwide among young people, ______ cooperation as well as courage plays an important role.
| A．who | B．which | C．where | D．of which |
-----What about today’s temperature?
------It’s the same as, if the weather report is exact as usual, _____ of yesterday.
| A．one | B．that | C．ones | D．those |
— Can I pay the bill by check?
— Sorry, sir. But it's the management rules of our hotel that payment ______be made in cash.
| A．can | B．need | C．will | D．shall |