This new model of car is so expensive that it is________ the reach of those with average incomes

Do you have any idea why Mark is leaving?—- No. In fact, everyone is ________about it．

.China is seeking ________ access to________ more friendly environment in economic development between the UnitedStates.

It’s already 10 o’clock. I wonder how it _____ that she was two hours late on such a short trip. [ ]

According to ______ survey，there’re more and more young people who go for a walk at ______ dusk instead of sitting in front of the computer.