Not only ________learn a foreign language, but also ______ master it well.
A. must we ; we must B. must we ; must we
C. we must ;’ we must D. we must ; must we
______ with a moon rover(月球车) called “Yutu” (Jade Rabbit) , Chang'e-3 successfully landed on the moon.
A．Being equipped B．Having equipped C．To be equipped D．Equipped
All their attempts to rescue the child from the burning building were _____, and he died soon.
A. in place B. in return C. in vain D. in ruins
Be careful when you cross this busy street. _____, you may get run over by a car.
A. If not B. If so C. If any D. if possible
Smoking is so harmful to people’s health that it kills __________ people each year than automobile accidents.
A. seven more times B. seven times more C. over seven times D. seven times
I’ll come to pay a visit to you if _______ this weekend.
A. you’re convenient B. it is convenient for you
C. you feel convenient D. it is convenient with you
