I don’t know _________.
| A．what to do it | B．how to do it | C．what to do | D．to do what |
The days are gonephysical strength was all you needed to make a living.
| A．when | B．that | C．where | D．which |
The new financial policy of the United States has ______ a chain reaction in the international money markets.
| A．set off | B．given off |
| C．put off | D．got off |
I don't doubt ______ he has the ability to deal with the situation, but ______ the problem can be solved quickly depends on his attitude.
| A．whether; if | B．that; whether |
| C．if; whether | D．whether; that |
—I will buy you a mountain bicycle as a reward if you pass the college entrance examination.
—______.
| A．It all depends | B．It's up to you |
| C．It doesn't matter | D．That's a deal |
—Mrs. Smith! Tom has broken the mirror!
—________ Such things happen．
| A．How come? | B．What a pity! |
| C．Doesn’t matter． | D．What’s the matter? |