Previously ______ at a fast food restaurant, the Smiths were dissatisfied with the unhealthy meals they served there.
#93071
A
volunteered
B
to volunteer
C
volunteering
D
having volunteering
推荐题目
His essay, ____many times,was brief and to the point,and therefore won the first prize in the writing competition.
#97833
A
polishing up
B
having polished up
C
to be polished up
D
having been polished up
With masses of homework _____, I can hardly spare time to practice playing the piano．
#96494
A
done
B
to do
C
doing
D
being done
_______ to find the book from the library, she decided to turn to her professor for help.
#91002
A
Failed
B
To fail
C
Having failed
D
Being failed
She soon _________ French when she went to live in France.
#89927
A
set up
B
took up
C
put up
D
picked up
Tim Bemers-Lee is generally considered ______ the World Wide Web, on which all the information is shared by all.
#94516
A
to have founded
B
having founded
C
founding
D
to found