—Do you have _____ trouble finishing the work?—The work is not so difficult as you think. We have finished it already.
By nine o’clock all the Olympic Torch bearers had reached the top of Mount Qomolangma, ______.
Not only_______ the food in the restaurant, he______ to pay for it.
My mother doesn’t approve_______ abroad to study before graduation from high school.
The class __________ 80 students is hard to manage.
_________, he knows a lot about space and satellite.