By the 1920s, Howard Carter ____ an explorer.
#99036
A
has become
B
had become
C
became
D
would become
推荐题目
----- This is the second time I____ pictures with my own camera.----- It’s time that you ____ a picture of me.
#104909
A
had taken; took
B
have taken; took
C
will take; will take
D
took; have taken
Mr. Black________ Shanghai in a few days. Do you know when the earliest plane ________on Sunday? 
#99159
A
leaves for;takes off
B
is leaving for;takes off
C
is leaving for;is taking off
D
leaves for;is taking off