It's vital that the government ____ more on environmental issues. A. focuses B. must focus C. should be focused D. focus

____ get older, the games they play become increasingly complex. A. Children B. Children, when they C. As children D. For children to

The rural areas are said to suffer from the lack of natural resources as well as ____ weather conditions. A. rigid B. extreme C. poor D. worsenedB. level C. extent D. number

It is recommended the candidate ____ take as many IELTS mock tests as possible before going for the real exam, which cost nearly $250. A. takes B. should take C. must take D. will take

The Principal demanded that the heaters ____ immediately. Winter is coming! A. are repaired B. be repaired C. were repaired D. repair

The doctor advised that the man ____ to a private room. A. should transfer B. be transferred C. transfer D. must be transferred

People migrate to urban areas on a massive ____ for many reasons. A. scale B. level C. extent D. number

In some urban areas, it is reported that the population almost ____. A. doubles B. twice C. two times D. twofold

The boss insisted that Sam ____ at the meeting as he is too talkative for such a confidential project. A. not be B. isn't C. was D. is

People should be tolerant of other cultures; they should be more ____. A. half-hearted B. light-hearted C. open-minded D. single-minded

People migrate to urban areas on a massive ____ for many reasons. A. scale B. level C. extent D. number

The board of executives requested every employee ____ to the meeting this weekend. A. to come B. comes C. come stem D. must comedy