—What are you busy with recently?
—We have been looking into how the machine breakdown __________.
| A．came out | B．came about | C．came down | D．came up |
I lent him ten magazines,_____are more wonderful than you can imagine.
| A．most of which | B．most of them | C．and most of which | D．most of that |
Although she begged her father over and over again, he still didn’t _____ her marriage.
| A．depend on | B．put forward | C．watch out | D．approve of |
You needn’t take a taxi to go to the station, because it is____walking distance here.
| A．in | B．within | C．under | D．below |
You____me my bike yesterday afternoon; I needed it so badly.
| A．should have returned | B．should return |
| C．must return | D．must have returned |
—Do you want tea or coffee?
—________. I really don’t mind.
| A．Both | B．None | C．Either | D．Neither |