—You may find the key to the math problem on page 107.—Ah, it's so simple. I wonder why I _       of that.
#100442
A
hadn't thought
B
haven't thought
C
didn't think
D
wasn't thinking
推荐题目
---Why did you come by taxi? ---My car broke down last week and I still ________ it repaired.
#101344
A
didn’t have
B
hadn’t had
C
haven’t had
D
won’t have
A fully-grown blue whale _____ 110 feet in height and _____ several tons.
#101038
A
is measured; weighs
B
measures; weighs
C
is measured; is weighed
D
measures; is weighed
  – Will you go with us to the National Park?--- Well, it _______.
#103683
A
depending
B
depends
C
depends on
D
is depended
I know Mr. Shuili; we ______ to each other at an English lecture.
#102636
A
are introduced
B
are been introduced
C
were introduced
D
had been introduced