You have to leave now ________ you can catch the early bus．

so that

as soon as

because

if

The little elephant is afraid to go alone．He always walks ________ his mother．

besides

beside

below

under

China is developing ________ of all the countries in the world．

fast

faster

fastest

the most fast

A moment, please．I'm checking if Mr．Smith ________ free tomorrow．

is

being

to be

will be

－Is Jessica giving us a speech this evening?

－No, it ________ be her．She ________ to Japan．

mustn't; has gone

mustn't; has been

can't; has gone

can't; has been

The cookies ________ good．Could I have some more?

taste

smell

feel

sound

At least 300 million people are using QQ ________ by Ma Huateng to chat on line．

create

creates

creating

created

I'm expecting a pet dog for long, but mom has no time to buy ________ for me．

it

one

this

that

Michael Jordan has failed over and over again in his life．And that's ________ he succeeds．

what

when

why

where

a, a

a, the

/, the

/, a