[ Grammar ]
He had been working for more than 11 hours. He __________ be tired after such hard work.
A. mustn´t
B. should
C. must
D. have to

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‘Allan __________ (buy) at the supermarket when I ___________ (see) him.
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Grammar › View
For permanent situations (or nearly permanent; true for a few years at least) we use……..
A. Present continuous
B. Present simple
C. Present perfect