You look busy all day. I think you …(take) a ...

★ Modals "Should"

You look busy all day. I think you …(take) a rest for acwhile.

A. Should take

B. Should have taked

C. Should be taking

D. Should have take

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If we want to express our regret, we can use the formula of …

A. Should + Simple

B. Should + Perfect

C. Should + Continous

D. Should + Past