The biggest problem you generally encounter while towing a single tow astern is （).A.The c

According to the survey, the biggest reason for students' stress problem is______.

A．school work and grades

B．relationships and dating

C．financial problem

D．family problems

The biggest problem with the computer is that

A．she doesn't know the program very well.

B．it regularly stops working.

C．the monitor is too small.

A.One of the biggest

B.Of the biggest one

C.The biggest one

D.There are the biggest

This means that cities with large populations have the biggest problem of dirty air

What is the biggest problem in today's life？

A．Pollution.

B．Air pollution.

C．Nois

According to the survey, the biggest reason for students' stress problem is ______.

A．school work and grades

B．relationships and dating

C．financial problem

D．family problems

What is the biggest problem with hydrogen-powered cars？

A．There is no cheap source of hydrogen.

B．There might be a safety problem in hydrogen production.

C．They may still be a cause of global warming.

D．They are not suitable for long-distance travel.

According to Daniel, the biggest problem for a TV host is to ______.

A．become anxious

B．become self-important

C．become confident

D．become self-conscious