—How many times ________ Li Yan ________
题型：选择题
问题：
—How many times ________ Li Yan ________ to the Great Wall?
—Twice.
A．has; been
B．is; going
C．has; gone
D．does; go
—How many times ________ Li Yan ________ to the Great Wall?
—Twice.
A．has; been
B．is; going
C．has; gone
D．does; go