I can’t go to ________ sleep because I’m too excited about the trip tomorrow.

A．a

B．an

C．the

D．/

Margaret and ________ like to exercise. We are members of the Fitness Club.

A．I

B．me

C．my

D．mine

Your balance on your feet can show how ________ you are to live a longer, healthier life.

A．quickly

B．happily

C．likely

D．beautifully

AI is a very smart tool. It can help you ________ different kinds of tasks.

A．by

B．to

C．with

D．for

China has taken the lead in wind power and is now ________ producer in the world.

A．large

B．larger

C．largest

D．the largest

There are two exits. One is locked, but ________ door is open.

A．other

B．another

C．the other

D．others