What is Mary’s problem?

A．Sh.e is so worried and can’t sleep.	B．She can’t pass the exam.
C．She can’t communicate with others.	D．She can’t study English well.

Donna thinks Mary’s problem is __

A．great

B．common

C．wonderful

D．serious

The word "reduce" in the passage probably means

A．减少

B．排除

C．加强

D．增加

Donna thinks that           can help Mary think more clearly.

A．eating a lot of sugar	B．studying six hours every day
C．drinking a lot of coffee	D．eating foods high in Vitamin B

Which of the following is TRUE according to Donna’s letter?

A．The best time to study is from 10 pm to 1 am.

B．Walking outside can make you remember more.

C．It’s good to tell a study partner about your feeling.

D．It’s necessary to have a rest for 15 to 20 minutes an hour.