There are four factories in our institute, ________.
A. while each having over 100 workers
B. each having over 100 workers
C. which there are over 100 workers
D. with each that has over 100 workers
I lost your telephone number. _______ I would have rung you up long before.
And
But
C. Otherwise
D. Unless
I got a little ________ when I learned that the appointment with the general manager was changed to another time.
A. concerning
B. horrible
C. upset
D. awful
Exercise 1. Translate the sentences into Chinese.Success needs perseverance rather than speculations.