_____ time, the teacher had us do half of the exercises in class and complete the other half for our homework.
For Chinese Dream, many people dream of_______ a good chance for a better job.
Not only ________learn a foreign language, but also ______ master it well.
______ with a moon rover(月球车) called “Yutu” (Jade Rabbit) , Chang'e-3 successfully landed on the moon.
All their attempts to rescue the child from the burning building were _____, and he died soon.
Be careful when you cross this busy street. ________, you may get run over by a car.