Letterboxes are much more ________ in the UK than in the US, where most people have a mailbox instead．

common

normal

ordinary

usual

________ fire, all exits must be kept clear．

In place of

Instead of

In case of

In spite of

Some passengers complain that it usually ________ so long to fill in travel insurance documents．

uses

takes

spends

spares

The student worked ________, but, to our disappointment, he still failed in the final examination．

as hard as possible

as hard as possibly

as hard as he can

so hard as he could

People in that mountainous area seldom ride bicycles．Instead they travel ________．

by a horse

by horses

on a horse

on horse

He asked what you ________ when you grew up．

were

will be

were going to be

had been

The twins wondered if their parents ________ them another story the next week．

would tell

had told

will tell

told

I don’t think I’ll need any money but I’ll bring some ________．

at last

in case

once again

in time

Whenever I visit him, he is always busy ________ phone calls．

making

to making

on making

for making

The scientific research ________ Professor Wang has been kept busy will be of great benefit to our humans．

with that

to which

in which

with which