The giant panda, never ________ before in Tokyo, immediately became the center of attraction in the zoo．

see

seeing

to be seen

seen

Remember that you can reach success much faster, when you actually love what you ________．

are doing

have done

did

had done

Though invited several times, I still have some doubt ________ I can go to his birthday party．

when

where

why

whether

I don’t think Susan will be sad but I’ll go and comfort her ________ she is．

in case

even though

as if

unless

Good morning．I ________ my watch to be repaired two days ago．________ ready yet?

left; Is it

had left; Is it

left; had it been

have left; has it been

Most of us still wonder ________ it is ________ makes those honest peasant workers, without being paid at all, resign themselves to the bosses．

that, what

what, that

/, that

/, what

Our government will try to beautify the city and with trees and flowers ________ everywhere, our city will take on a new look．

planted

planting

to plant

having planted

To little Mike’s surprise, lying on the desk ________ some of his favorite toy cars he had longed for．

are

was

were

is

The number of foreign friends visiting the Summer Palace ________ rising steadily since 2000．

is

were

has been

have been

House prices are extremely high in Beijing, ________ it hard for young people to move in and build their own families．

making

to make

made

makes