It is known to all that every minute _____ full use of ______ the lessons will benefit students a great deal.
| A．which makes; studying | B．when made; to study |
| C．that made; to study | D．when is made; studying |
As a boy of six,.
| A．Tim’s parents asked him to play the piano every day. |
| B．Tim and his parents would play the piano together. |
| C．Tim had to practice playing the piano every day. |
| D．to learn playing the piano is too hard for Tim. |
Ms Jonesher stepmother travels once or twice every other year.
| A．and | B．besides | C．as well as | D．and along with |
It really seemed ages ____ the police came on the scene and cleared away the damaged cars．
| A．before | B．after | C．when | D．as |
QQ,you can chat with your friends, makes communication easy．
| A．how | B．where | C．that | D．which |
Lady Gaga has put off her concerts because of the difficulties _______by the ongoing strikes.
| A．causing | B．to cause | C．to be caused | D．caused |