_______ the Internet is of great help, I don't think it's a good idea to spend too much time on it.
A If B While C Because D As
Which is＿＿＿＿＿country, Canada or Australia?
| A．a large | B．larger | C．a larger | D．the larger |
Alexander Graham Bell invented＿＿＿＿＿telephone in1876．
| A．／ | B．a | C．the | D．one |
Beyond＿＿＿＿＿stars, the astronaut saw nothing but＿＿＿＿＿space．
| A．the；／ | B．／； the | C．／；／ | D．the； the |
Alice is fond of playing＿＿＿piano while Henry is interested in listening to＿＿＿music．
| A．／； the | B．／；／ | C．the；／ | D．the； the |
＿＿＿＿＿danger man is often much wiser than usual．
| A．In a time of | B．In the times of | C．In the time of | D．In time of |