Professor Smith, along with his assistants, _____ on the project day and night to meet the deadline.
#101966
A
work
B
working
C
is working
D
are working
推荐题目
. Tom as well as his classmates __________ a song when the teacher came into the classroom.
#103734
A
are singing
B
were singing
C
is singing
D
was singing
Where were you at lunch time? I   a seat for you in the dining hall.
#104548
A
saved.
B
was saving .
C
have saved.
D
had saved.
By the time I swa the angry expression on his face, I ______ exactly what I was having to face. But not for a moment _______ I should quit.
#104463
A
had known; I thought
B
have known; had I thought
C
would know; I would think
D
knew; did I think
—What’s the noise outside?—Some children_____ hide-and-seek in the yard. 
#101214
A
were playing
B
are playing
C
have played
D
played