A．I realizeB．I realizedC．did I realizeD．had I realizedO……

单项选择题—It took them more than half an hour to work out the chemistry problem. —Really It（）be an easy one.

A．can't
B．needn't
C．mustn't
D．won't

单项选择题—Excuse me, any bank around here —Oh, look, there is（）over there next to the bus stop.

A．that
B．one
C．it
D．another

单项选择题He is taking the situation too seriously. Actually, it is not （）bad for he still has time.

A．much
B．very
C．that
D．rather

单项选择题—I wonder if I could read your autobiography. —No problem, the moment I（）it.

A．finish
B．finished
C．will finish
D．have finished

单项选择题The salesman approached the house cautiously because of the vicious dog.（）

A．nervously
B．bravely
C．carefully
D．deliberately

单项选择题They met to consider the drawbacks in the proposal.（）

A．misgivings
B．shortcomings
C．probabilities
D．details

单项选择题The manufactures hoped that the motor show would boost their car sales.（）

A．add
B．promote
C．lift
D．prompt

单项选择题It seems that concentrations of salt cause changes in the colour of sea water.（）

A．fluctuations
B．deviation
C．modifications
D．variations

单项选择题The clerk had to break off the conversation in order to wait on a customer.（）

A．continue
B．stop
C．hurry
D．begin

单项选择题When they asked me to make a speech，I was at a loss for words.（）

A．elated
B．dumb
C．surprised
D．tonguetied