A、As entering
B、While entering
C、On entering
D、After entering
______ entering his flat, Jack was shocked to find his new computer missing.
A.In
B.On
C.By
D.At
He ______ the gun beneath a huge bag before entering the checkpoint of the airport.
A.contracted
B.collected
C.concealed
D.constituted
A、To enter the classroom
B、Entered the classroom
C、Entering the classroom
D、To be entered the classroom
The main idea of the passage is that ______.
A.America is entering an ever-aging society
B.age plays a more important role in America
C.many sayings have been given a new meaning
D.America's aging process is reshaping the society
A、there was a knock on the door
B、someone was knocking at the door
C、we heard a knock on the door
D、we heard someone is knocking at the door
Theycalled at every door, () people to buy their products.
A. persuading
B. persuade
C. having persuaded
D. being persuaded
A.from mouth to mouth
B.from door to door
C.from the masses to the masses
D.from side to side