A harmonious society is very important , so all the laws must be strictly _________.

A. watched B. observed

C. carried D. handled

Each time I ________ a good essay when reading newspaper , I cut it out and keep it.

A. work out B. come across

C. care about D. put down

Our government’s plan to fight against air pollution will focus on _____ information and handling PM2.5.

A. expressing B. representing

C. gathering D. acknowledging

Generally speaking , almost all the kids are ______about how everything around them works.

A. curious B. careful

C. anxious D. excited

Before our study we did not have data that could tell us __ those changes were small or large .

A. that B. how C. when D. whether

The questionnaire takes _________ ten to fifteen minutes to complete and can be used along with the assessment interview.

A.. mainly B. exactly

C. approximately D. precisely

__ Sally , our monitor , was late for class this morning .

__ _________ ? As far as I know , she never came late for class.

A. How come B. what for

C. So what D. Why not

______ these new treatments , people with high blood pressure can live a long and active life .

A. According to B. Thanks to

C. As for D. Instead of

At the conference , political leaders from many countries promised to work together to defend the world ________ terrorism and other threats.

A. for B. without

C. against D. beyond

Look ! There are so many mistakes in your composition . You ____ have paid attention to it.

A. may B. must C. can D. should