---Excuse me, which is the way to the museum?---Sorry, I don’t know. This is my            time here.
#39580
A
one
B
two
C
second
D
first
推荐题目
 —______ there is no water left on the earth? —I really don’t know.
#42596
A
So far
B
Even though
C
What if
D
Ever since
I have two pens. ______ is red, ______ is black. 
#40099
A
Either… or…
B
First… next…
C
One…the other…
D
One… Two…
 — How old is his father?— He is thirty ________.
#36019
A
years
B
years old
C
old
D
year old
 People have learned a lot fromstudies.
#35692
A
science
B
scientific
C
scientist
D
sightseeing