The idea for the new plan came to his mind, ______ to his experiment in the lab.
It is reported that this kind of vegetables _ a lot of vitamins C. A. contains B. includes C. holds D. keeps
______ time went by , Herbert could finish all the maths exercises in class.
Lots of the scientists in our country are working hard to ____the planet Mars .
Look at the notice . You are not allowed ____ the gymnasium without permission.
How are you going to _______ such problems?