1 . It’s ________ go to bed early and have a balanced diet.
A.important that | B.a necessity that | C.improper to | D.necessary to |
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2 . A smartphone is _______ for young people.
A.necessity | B.important | C.quiet | D.difficult |
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3 . Stress and ________ of sleep may damage your health.
A.necessity | B.subtract | C.lack | D.manner |
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4 . We were discussing the ___________ of increasing more workers.(necessary)
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