After waiting for seemed to be a century , a doctor came out from the operation room and informed us everything was OK. A which B what C it D that
The International Maths Summer Camp was held in Wuhan,____ the top students in maths from all over the world.
The meat tastes as though it ____ bad. Throw it off.
The manager always put ____ of his workers before__________.
Not until ____ finished my homework ___ to watch TV.
Today Xiao Li is absent ___the class. He ___ ill.