We couldn’t help ________ at what he said．

laugh

laughing

laughed

to laugh

It is the first time that I ________ such a beautiful girl．

see

have seen

had seen

saw

He was brought ________ by his grandmother．

down

to

up

in

The trees began to put out new leaves ________ the advent of spring．

in

with

for

on

We’re just tying to reach a point ________ both sides will sit down together and talk．

where

that

when

which

A typhoon swept across this area with heavy rains and winds ________ strong as 113 miles per hour．

too

very

so

as

He tried his best to solve the problem, ________ difficult it was．

however

no matter

whatever

although

She went to the bookstore and bought ________．

dozen books

dozens books

dozen of books

dozens of books

The water ________ cool when I jumped into the pool for morning exercise．

was felt

is felt

felt

feels

________ in the regulations that you should not tell other people the password of your e-mail account．

What is required

What requires

It is required

It requires