____ to reach the headmaster on the phone, the student sent an email instead.
#96434
A
being failed
B
Having failed
C
Failed
D
To fail
推荐题目
It rained nonstop for ten days , completely our holiday.
#97820
A
to ruin
B
ruined
C
having ruined
D
ruining
________the working efficiency，the boss allows the employees to have a coffee break.
#88719
A
Improving
B
To improve
C
Having improved
D
Improved
Mrs. White showed her students some old maps from the library
#89637
A
to borrow
B
borrowed
C
to be borrowed
D
borrowing
________volcanoes now for many years, I am still as enthusiastic about my job as the first day I first______.
#92841
A
Studied, started
B
Have studied, started
C
Having studied, started
D
Having studied, starting