Câu hỏi: No vehicle weighing over 3.5 tons is allowed on this bridge, according to traffic signs placed at both ends of the structure.

A. corruption

B. construction

C. connection

D. confusion

Câu 1: Don't be concerned about your mother's illness; she'll recover soon.

A. surprised at

B. worried about 

C. embarrassed at

D. angry with

Câu 2: During the recession, many small companies were eradicated.

A. taken over

B. wiped out

C. run on

D. set up

Câu 3: He insisted on listening to the entire story.

A. part

B. funny

C. whole

D. interesting

Câu 4: He made one last futile effort to convince her and left home.

A. favorable

B. difficult

C. ineffectual

D. firm

Câu 5: It is really incredible that he is unaware of such basic facts.

A. difficult

B. unbelievable

C. imaginable

D. disappointed

Câu 6: Many scientists agree that global warming poses great threats to all species on Earth.

A. irritations

B. annoyances

C. fears

D. risks