— They speak perfect English. How long have they learnt it?
— ______ they were seven years old.
| A．Since | B．When |
| C．After | D．Until |
If you keep on working hard, I have no doubt ___ you’ll be successful in the future.
| A．whether | B．when | C．that | D．if |
She devoted as much time as she could _______ others.
| A．help | B．helped |
| C．to helping | D．helping |
Many butterflies are still ____ after the long winter days. Now the forest is ____.
| A．lively;lively | B．alive;alive |
| C．alive;lively | D．lively;alive |
Cheer up and keep on trying. Courage is doing ______.
| A．what are you afraid to do |
| B．what you are afraid to do |
| C．how are you afraid to do |
| D．how you are afraid to do |
— Tim, do your parents like football?
—___ my dad ___ my mum likes it. They both prefer tennis.
| A．Either; or | B．Neither; nor |
| C．Not only; but also | D．Both; and |