. “Would you mind if we ____ you by your first name?” - “Not at all. Please call me Tom.”
A. called
B. call
C. calling
D. want to call
3. If I had known your new address, we ____ to see you.
A. came
B. will come
C. would come
D. would have come
4If I ____ get a rode, I'll go fishing.
A. can
B. could
C. may
D. might
5 If they had enough time, they ____ head south.
A. will
B. can
C. must
D. might
6. If you ____ a choice, which country would you visit?
A. have
B. had
C. have had
D. will have
7Trees won't grow ____ there is enough water.
A. if
B. when
C. unless
D. as
8Phong Nha Cave has been regarded by the British Cave Research Association as the top cave in the world ____ its four top records.
A. despite
B. with
C. due to
D. because
9 ____ the decisive assistance of the villagers, we would not be able to facilitate the ecotour.
A. But
B. Neither
C. With
D. Without
10According to the weather forecast, it will be fine at the weekend. If the weather ____ fine, we ____ on camping at the weekend.
A. were - would go
B. was – went
C. is - will go
D. will be - go
11. After lunch, we take a short talk to the elephant camp ____ you will enjoy an exciting elephant riding.
A. where
B. what
C. that
D. when
12You can climb up Mount McKinley, the highest peak in North America, to explore the rest of Denali National Park in Alaska, and view some ____ wildlife.
A. interested
B. spectacular
C. excited
D. great
13The vast wilderness of Alaska offers some unbelievable ecotourism opportunities, and one of the most ____ tourism industries in the USA.
A. sustainable
B. natural
C. safe
D. environmental