________ doesn’t seem to have been much difficulty in solving the problem．

A．It

B．That

C．There

D．He

She looks sad．Could you please tell me ________ that prevents her from being as happy as before．

A．what it is

B．it is what

C．how it is

D．it is how

He suddenly saw Sue ________ the room．He pushed his way ________ the crowd of people to get to her．

A．across; across

B．over; through

C．over; into

D．across; through

Helen was much kinder to her youngest son than to the others, ________, of course, made the others envy him．

A．who

B．that

C．what

D．which

My father ________ to express his warm welcome．

A．shook hand with my teacher

B．shook hands with my teacher

C．shook my teacher’s hands

D．shook my teacher by his hand

The storm ________ and we all got wet．

A．bursting

B．burst

C．fell

D．falling

The number of students in this school ________ by 5％ every year．

A．rise

B．raise

C．rises

D．raises

Two-thirds of the housework ________ today．

A．has finished

B．has been finished

C．have finished

D．have been finished

Do you remember the place ________ we visited last year?

A．that

B．where

C．when

D．in which

He career(前途)is ________．

A．ruin

B．in ruin

C．in ruins

D．damage