The farmers were more anxious for rain than the people in the city because they had more ______.
| A．at length | B．at last | C．at stake | D．at most |
．—Steve come back because the window is open．
—Yes．but he _______left it open last night．
| A．must have；might have | B．might have；can’t have |
| C．can have；should have | D．might；must have |
_________we sleep together or apart is one of the biggest cultural differences, and only in western societies ______ the feeling that babies should sleep apart from their parents.
| A．No matter; it is | B．Whether; is it |
| C．No matter; there is | D．Whether; is there |
____ they are closest friends is not clear though they live together.
| A．That | B．If | C．What | D．Whether |
A tunnel was built under _____ was a lake a year ago.
| A．where | B．which | C．that | D．what |
—Mary, don’t you believe your sister?
—Yes. I believe _____ she says.
| A．however | B．no matter how | C．whatever | D．no matter what |