[ When vs. While ]
Many cannot sleep ____ their phones are next to their beds.
A. When
B. While
C. Either could be used.

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Modal Verbs › ViewIn the context of obligation, which phrase is correct: ‘You ___ go to the shopping centre to buy a mobile phone.’?
A. don’t have to
B. mustn’t
C. should
D. might
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Any one of my students _________ well on tests.
A. performs
B. perform
Past Simple › ViewWe … some sandwiches and fresh fruit to eat for lunch yesterday.
a) buy
b) buys
c) bought
Homonyms › View
I keep an extra ___ of shoes at my office.
a. pear
b. pair
c. pare