In cities in China, ______ bus is ______ popular means of transportation.
| A．a; the | B．a; / | C．the; a | D．the; the |
In our class there are 50 students，half ___________ wear glasses．
| A．in whom | B．in them |
| C．of whom | D．of them |
Passengers are permitted ___________ only one piece of hand luggage onto the plane．
| A．to carry | B．carrying |
| C．to be carried | D．being carried |
— Dear，the skirt I received today is not the same as is shown online．
— _________? But I promise you that we’ll 1ook into it right away．
| A．Who says | B．How come |
| C．What for | D．Why worry |
She has received all offer from Berkeley，but I don’t know ____________ she will accept it or not．
| A．Where | B．whether | C．what | D．which |
Lucy pretended to be cheerful，____________ nothing about the argument．
| A．says | B．said | C．to say | D．saying |