I called you at last night，but you didn't pick up．
Oh I ______ "HuanlesongⅡ"，at home that，that time．（ ）
A．watchedB．am watching
C．was watchingD．watch
The watch _______ you gave me keeps perfect time．（ ）
A．whoB．whatC．that
She went to a European university to study art．_______ university is really amazing．（ ）
A．AnB．TheC．A
He ________ in Zhuzhou since seven years ago．（ ）
A．worksB．workedC．has worked
The passengers _______ show their ID cards before getting on the plane．（ ）
A．mightB．mustC．could
Her birthday is ______ winter，the most beautiful season in a year．（ ）
A．inB．atC．on