It is not very easy for the Chinese ________ for a visa(签证) to the USA. A. apply B. to apply C. applying D. applied
—Can I help you,dear? —Yeah,I don’t know a banana milk shake. Maybe you can teach me.
_____ to improve English?
—Which sweater do you prefer, the yellow one or the pink one? —______. I like a light blue one.
I don’t know if he_________here. If he ___________tomorrow, I will tell you.
The world’s population is getting larger and larger, so scientists are trying to ______ new ways to solve the food shortage.