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_____ Caspian Sea is in _____ Russia.

_____ Professor Cloke is replacing _____ Dr. Roverso for the rest of the term.

Choose the correct modal auxiliary to express polite request. A: Mom, I finished my homework. ________ you check it? B: Sure. I’d be happy to.

Choose the correct modal auxiliary. It’s a good idea to be careful with your passport and other travel documents. You _______ be careful with your passport and other travel documents.

_____ jogger

Choose the correct modal auxiliary in the following sentence: Yesterday, our teacher  ______ leave school early.

Decide if must expresses logical conclusion or necessity. You must be Faisal’s son. You look just like your father. 

I went to _____ store at the mall, and _____ really kind salesperson helped me choose one.

Decide the meaning of could in the following sentence. A: I don’t know where Rick is? Do you? B: I’m not sure. He could be at the grocery store, but he might be studying at the library.

Complete the sentence with be able to or not be able to. When I was a teenager, I ___________________ eat a whole pizza by myself, but I can’t now.