--- Where is your mother?--- She _______ to Sichuan on business. She has ______ there four times recently. 
#40456
A
has gone; gone
B
has been; been
C
has gone; been
D
has been; gone
推荐题目
When I came home, my father _____ an e-mail on the computer. 
#40545
A
writes
B
wrote
C
is writing
D
was writing
By the time I was five, I          learning English.
#39666
A
had started
B
have started
C
started
D
have been
 Don’t turn on the TV. Lucy has just come home from work and __________. 
#38273
A
sleeps
B
is sleeping
C
was sleeping
D
slept