---Alice, you look puzzled, Have you understood it?---No．I _____another problem just now．
#101781
A
l have thought of
B
am thinking of
C
had thought of
D
was thinking of
推荐题目
In addition to the farming they ______ since the 1990s, the Smiths have started a small business.
#100365
A
have done
B
had been done
C
were doing
D
have been doing
We all jumped with joy at the exciting news, After all, we ______forward to the chance for many years.
#101641
A
are looking
B
were looking
C
have been looking
D
had been looking
．—That must have been a long trip.—Yeah, it________us a whole week to get there.
#99182
A
takes
B
has taken
C
took
D
was taking
Jack and Mike were found cheating in the exam, and_______by their teacher at the moment.
#101248
A
were scolded
B
are being scolded
C
have been scolded
D
were being scolded
---What ‘s the matter with you? --- You _____ my heart. - -- But I didn’t mean to hurt you.
#102840
A
broke
B
are breaking
C
had broken
D
have broken