Heart trouble is one of the most serious _____ of death among old people.
| A．reasons | B．troubles | C．illnesses | D．causes |
The police turn the whole house _______ looking for clues.
| A．upside down | B．out front | C．side by side | D．down to earth |
_______ , the girl worked in a hurry.
| A．Having swept the room | B．Another room swept |
| C．Having another room to sweep | D．Having another room to be swept |
. Which do you enjoy_____ your spare time, playing cards at home or taking a walk in the park?
| A．spending | B．to spend | C．having spent | D．to have spent |
.Most of the students in our class like to read China Daily, which_______ every day.
| A．comes out | B．comes up | C．comes across | D．comes about |
.______________ his age, the little boy read quite well.
| A．Considered | B．Consider | C．Considering | D．Having considered |