You must be aware ______the fact that it is ____ great importance to learn English well

Thistime next week I’ll be on vacation Probably I ________ on the beach

Someone who lacks staying power and perseverance is unlikely to ___a good researcher.

I am very sleepy. I tried _______my eyes open, but I couldn’t.

When will they leave? — They _____ very soonNew term _____ on September 1st.