I was surprised by her words, which made me recognize ________ silly mistakes I had made．

what

that

how

which

According to a recent U．S．survey, children spent up to 25 hours a week ________ TV．

to watch

to watching

watching

watch

The ________ situation of the chess games really ________ every member in the game．

confused; confused

confusing; confused

confusing; has been confused

confusing; confusing

I’ve worked with children before, so I know what ________ in my new job．

expected

to expect

to be expecting

expects

Scientists are searching for the old tree ________ because it can teach them a great deal about many matters．

live

lively

living

alive

I have got a load of bread; now I’m looking for a knife ________．

to cut it with

to cut with it

with it to cut

it to cut with

The Canadians struggled all through the years ________ US ________ the Japanese．

with; against

for; against

to; with

against; for

I ________ my classmates ________ their games yesterday．

joined; in

joined in; in

joined up; in

took part in; in

We can communicate ________ others ________ cell phone．

with; with

with; by

to; though

to; on

________ and out of breath, we reached the top of the mountain and stopped ________ the beautiful scenery．

Tiring; to admire

Being tired; admiring

Tired; to admire

Tired; admiring