Don't worry about the child．Next to him ________ a lady, ________ he can turn when he is in trouble．

sits; whom

sits; to whom

is sitting; with whom

was sitting; to whom

The girl had hardly rung the bell ________ the door was opened suddenly, and her friend rushed out to greet her．

before

until

as

since

In all kinds of competitions, Jackie ________ a most excellent athlete．He has won so many gold medals．

practises

conducts

behaves

proves

________ along the quiet road at forty miles an hour, and then an old man suddenly started to cross the road in front of me．

Driving

when I was driving

I was driving

Having driven

What lessons China can draw from ________ global financial crisis has become ________ hot topic among us students．

a; the

/; a

the; a

/; the

________such a good chance, he planned to learn more．

To give

Having been given

Having given

Giving

The sun gives off energy ________heat and light．

in face of

in terms of

in the form of

in case of

________ in the last examination, she was more confident of another success in the coming one．

Succeed

Having succeeded

Succeeded

To succeed

There comes the time to ________．Do feel free to say what you want to．

hold the floor

sweep the floor

open the floor

fix the floor

The hotel has been enlarged; ________, it's service is improving．

as a result

on the other hand

in addition

as well as