I intend to study English ______ American business methods.
A. to understand
B. understanding
C. understood
D. understand
—I went to the museum you introduced to me yesterday.—Oh, did you ______.
A. So I did
B. So did I
C. Either I did
D. Either did I
一位75岁的男性老人,一年前曾出现左心衰表现,根据美国心脏病学会及美国心脏学会2001分期方案,该老年人的心衰为( )
A期
B期
C期
D期
Emma only moved house last week and she () knows her neighbors!
A. already
B. still
C. always
D. yet