The rise in consumer spending is an encouraging ________ that the economy may be recovering．

symptom

solution

subject

sign

________ how mirrors produce image, we need to know what light does．

Understanding

Understood

To understand

Having understood

We should ________ for possible delays on the motorway and leave an hour earlier．

apologize

allow

account

ask

I've had enough of my neighbor．I'm going to ________ their noisy parties right now．

put an end to

give way to

look up to

come up to

She would always be an outsider here, no matter how much she ________ try．

could

must

might

need

Human history is rich ________ examples of our ability to overcome and rise above difficulties．

with

of

on

by

________ is surprising is that there are so many Chinese restaurants in Toronto．

It

That

Such

What

Most companies' marketing effort is focused on getting customers, with little attention ________ to keeping them．

paying

to pay

paid

having paid

When you reach the other end of the bridge, I ________ right there to show you the way．

wait

have waited

was waiting

will be waiting

Cynthia is not ashamed of what she does, ________ she ends up doing something wrong．

as though

in case

even if

for fear