A. if B. when C. which D. since
单项选择题There is a （）of impatience in the tone of his voice.
A. dot B. hint C. notion D. phrase
单项选择题You may use the room as you like （）you clean it up after wards.
A. so far as B. so long as C. in case D. even if
单项选择题Tim will call me as soon as he （）my package.
A. receive B. will receive C. received D. receives
单项选择题Dr. Smith, together with his wife and daughters,（）visit Beijing this summer.
A. is going to B. are going to C. was going to D. were going to
单项选择题We don't know why so many people in that region like to wear dresses of such （）colors.
A. low B. humble C. mild D. dull
