单项选择题 He is universally recognized as an authority on construction engineering so one of his jobs is（）the building work.

单项选择题 It’s getting late and I have to leave now.（）

单项选择题 Which brands are you familiar with？（）

单项选择题 The pebbles are the other things in life that matter，but on a small scale.（）

单项选择题 So Keith and his new partner buy the two shops and draw up a partnership deed.（）