–Mom, may I go swimming with my friends in the river? –No, you _________. That’s too dangerous.

—You look so tired. —Yes. The loud noise upstairs stopped me        the whole night.

— Who’s singing in the next room? — It ______ be Mary. She ______ New York. 

--- Will the new iphone cost a lot?--- I ________ think so. Apple’s products are usually expensive.

----The task is challenging and demanding. Who do you think can make it?---- ___________my partner have a try? I think she is the right person to do it.