Question:
The knife ________ at a high place where the children can’t reach.
-
A.
must be kept -
B.
must keep -
C.
must be kept -
D.
must not keep
Reference explanation:
Correct answer: A
Answer A
“Knife -Dao” cannot be placed high on its own => use passive form
S+ Must + be + Vpp +.. so “keep” will become “kept”
The knife should be kept in a high place out of the reach of children.
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