By the time he was twelve he ______ a chemistry lab of his own.
#104127
A
built
B
has built
C
had built
D
was building
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— What do you think of this kind of TV set, which ＿＿ in Shanghai? — Well, I don’t care such things.
#104415
A
was made
B
is made
C
has been made
D
had been made
--- I’d like to buy the kind of cloth which _____ easily.--- Will this one ________?
#101073
A
washes; do
B
washes; work
C
is washed; do
D
is washed; work
Don’t get the plastic tube close to the fire; it ______ easily.
#100178
A
burned
B
is burned
C
burns
D
is burning
Nothing that he suggested _____ to be of any use.
#100775
A
prove
B
proved
C
proving
D
has been proved