Question

_____ I was in the USA, I made a lot of friends there.

A．While	B．Although
C．Unless	D．Until

Answer 1

A

试题分析：句意：当我在美国时，我交了许多的朋友。A. While 当B. Although尽管 C. Unless如果不D. Until直到。根据句意，故选A。