The reason why I didn't go to Shanghai was ________ a new job.
A. because of got
B. because I got
C. I got
D. that I got
注射剂的等渗调节剂应选用( )
A. 硼酸
B. NaCl
C. 甘露醇
D. Na2CO3
It worried her a bit ____ her hair was turning grey.
A. while
B. that
C. if
D. for
Henry killed the dog. I'll ask him why ________.
A. did he do that
B. he did that
C. he does that
D. he has done so