It is desirable that the hotel manager ____ to call the maintenance staff every 6 months to clean up the air conditioners. A. remember B. will remember C. must remember D. remembers

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

If listeners are overloaded with too much information, they tend to ____. A. turn off B. see off C. switch off D. take off

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

X: “I saw a film about Africa on TV several weeks ago. It's really hot there, isn't it?" Y: “____” A. Certainly not. B. I've been there. C. Not all the time. D. Next month.

To test his theory, the chemist ____ an experiment. A. set up B. set out C. set forth D. set in

We suggested that you ____ to the organization. A. be admitted B. admitted C. admit D. are admitted

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

The lawyer was insistent that the contract ____ in the presence of all the parties concerned. A. sign B. should be signed C. must be signed D. were signed

It is imperative that you ____ ready when the car comes for you. A. be B. will be C. getting D. are already

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

Olga recommends that his brother ____ the job without reading the work contract thoroughly. A. should take B. can take on C. take D. not take