问题

ind of job have you ever done before–Oh, I _________ for an engineering company for threeyears,

A:is; are
B:are; is
C:was; were
D:were; was

正确答案是：

同类题型

t mistaken, Rio de Janeiro of Brazil waschosen as the host city for the 2016 Olympics.

After a heated discussion, they still don’t know at all _______.

_______ is your pen —It’s yellow.

ead tired I can’t walk any farther, Jenny —______, Tommy You can do it!

Not only you and I but Peter, the top student in our grade, ________ not able to solve the problem[ ]