(2013·高考北京卷)If we________a table earlier，we couldn’t be standing here in a queue.
#86616
A
have booked
B
booked
C
book
D
had booked
推荐题目
If human beings had been a bit less greedy and cruel, more birds and animals _______dying out.
#89245
A
ought to avoid
B
could have been avoided
C
should have avoided
D
might have avoided
If people ______virtual reality holidays, we ______ on an around-the-world tour．
#87555
A
invent; go
B
invented; had gone
C
invent; have gone
D
invented; would go