---This kind of game is exciting.
---Yes, but it’s dangerous. One can’t do it ________ he or she has got some training.
A. if B. after C. when D. Unless
--- Ge Garden is not far from Dongguan Street, so you can easily visit ________ in a day.
--- Fantastic! I can’t wait for it.
A. none B. both C. all D. either
A survey about how people in Yangzhou like the Korean TV series Descendants（后裔） of the Sun was ________ in our city last Friday.
A. taken out B. carried out
C. turned out D. given out
--- ________unusual music Li Yundi is playing!
--- Yes, all of the students are losing themselves in it.
A. How B. What an C. How a D. What
---I wonder what makes you a successful manager.
---I _______as a waiter for five years and it makes a lot of contributions to my today’s work.
A. serve B. have served C. was serving D. served
---Excuse me, sir. When can we have a swim in the pool?
---Not until it ________ next month.
A. repairs B. will repair
C. is repaired D. will be repaired
