I will buy this type of car _____ the price is brought down to under 10,000 dollars.
A. even if B.
provided that 
unless
D. whether
Daniel’s family _____ their holiday in Huangshan this time next week.
A. are enjoying B.
are to enjoy 
will
enjoy D. will be enjoying
It’s quite ______ me why such things have been allowed to happen.
A. for B.
against 
behind
D. beyond
– Did you visit the famous museum?
– No. We ______ it, but we spent too much time shopping.
A. could have visited B. must have visited
can’t
have visited D. shouldn’t have visited
The countryside gives us peace and quiet, which is ______ we can’t enjoy living in the city.
A. that B.
what 
why
D. where
This problem is said _____ three times at the meeting. However, they haven’t arrived at a conclusion now.
A. to have discussed B. to have been discussed
having
been discussed D. having discussed
