My son can different kinds of computers.A、take up B、clean up C、fix up
The railway_______Qinghai to Tibet is the longest plateau (高原) railway in the world.
If we don’t study hard, we will in our class.
---- _______you ________my cake? ----Yes, I’ve _finished it.
Scientists are trying their best to _______ways to treat the terrible disease called H7N9.
---- Can you see the notice there? ---- Yes, it ________“No Smoking Here”.