---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
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My house _____ when you visited Beijing last time, so I didn’t invite you to my home.
#101211
A
was being decorated
B
is being decorated
C
has been decorated
D
was decorated
As he never raises a finger to help me with the dinner, I the thanksgiving meal from this afternoon till now.
#100448
A
have been preparing
B
prepared
C
had been preparing
D
prepare
Alice _____ in a book that the city she lives in was _____ one hundred years ago.
#101516
A
found, found
B
founded, founded
C
founded, found
D
found, founded
．But for the storm, we ______ earlier．
#103802
A
can arrive
B
will arrive
C
had arrived
D
could have arrived