I’d like to have visited the Palace Museum, but something unexpected _______ to my father.
#103390
A
had happened
B
happened
C
has happened
D
happens
推荐题目
 Now we have arrived at the lake. But the view I photographed that day ________ any more.
#99469
A
doesn't exist
B
isn't existing
C
hasn't existed
D
hadn't existed
--Why does the lake smell terrible? -- Because a large amount of water_______.
#99621
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted