He could hardly work alone, _______

．—Which of these places will you visit, Yandu Park, Sheyang Nature Reserve or Dazong Lake—________. Because I have been there many times.

Mr. Wang told us that he would devote all thetime he could spend _______ his oral English before going abroad.

You’dbetter_______yourcigarette when you are in the wood.

_______ well prepared a gymnast is, he still needs a lot of luck in performing