Charlie likes ________ olk music and plays ________ guitar well．

/;/

the;the

the;/

/;the

No matter how frequently ________, the works of Beethoven still attract people all over the world．

performed

performing

to be performed

being performed

When first ________ to the market, these products enjoyed great success．

introducing

introduced

introduce

being introduced

What a strange man! He loves his wife, but ________ he often beats her．

at a time

at one time

at times

at the same time

Your performance in the driving test didn’t reach the required standard－________, you failed．

in the end

after all

in other words

at the same time

(经典回放)Roses need special care ________ they can live through winter．

because

so that

even if

as

Before building a house, you will have to ________ the government’s permission．

get from

follow

receive

ask for

I always take something to read when I go to the doctor’s ________ I have to wait．

in case

so that

in order

as if

________ he has limited technical knowledge, the old worker has a lot of experience．

Since

Unless

As

Although

John shut everybody out of the kitchen ________ he could prepare his grand surprise for party．

which

when

so that

as if