You can’t be ______ when you camp _____ a high altitude, ________ the air is thin.
A.enough careful; at; which | B.too careful; at; where |
C.careful enough; on;at which | D.too careful; on; that |
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You can’t be ______ when you camp _____ a high altitude, ________ the air is thin.
A.enough careful; at; which | B.too careful; at; where |
C.careful enough; on;at which | D.too careful; on; that |