【2015·安徽】It is reported that a space station ______ on the moon in years to come.
The biggest cities in Canada only have about six million people while _______ in China are much larger.
____ with what the students had done, the teacher praised them highly.
you can borrow my caryou promise not to drive too fast.
Not until____ did Humphrey begin working.
21st Century, ____weekly newspaper, provides us with____variety of fresh articles about campus studies and life.