（2014湖北黄冈）—I can hardly believe my eyes．Is that you，Lucy？
—Yes．It has been almost 20 years________we were together．
A．since
B．before
C．after
D．until
（2014江苏连云港）—________will the fog and haze last？
—I’ve no idea．There is no sign of an end．
A．How soon
B．How far
C．How long
D．How often
Miss Li________English in this school since she moved to this city from her hometown．
A．taught
B．has taught
C．was teaching
D．had taught
They________here for more than ten years．
A．live
B．lives
C．are living
D．have lived
The famous writer________eight popular books since 2005．
A．writes
B．wrote
C．has written
D．is writing
We________more than 1，600 words since we began to learn English．
A．learn
B．have learned
C．learned
D．are learning
