The boy’s bad behavior at school __________ his mother many sleepless nights.
| A．cost | B．made | C．caused | D．led to |
The Chinese language differs from many Western languages ________it uses characters which have meanings and can stand alone as words.
| A．when | B．where | C．in that | D．in which |
It is often that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
By the time she reached the corner of the street, the footsteps _________.
| A．had gone | B．were gone | C．are missing | D．have disappeared |
As Polly observed the passengers on the train, she _______that she was being watched by a tall man in a dark coat.
| A．feared | B．sensed | C．sighted | D．sniffed |
Kathy ______ a lot of Japanese while working with some Japanese engineer.
| A．made up | B．took up | C．pick up | D．turned up |