Politeness is a(n) _______phenomenon among all the social groups, but it is marked by different cultures.
| A．steady | B．complete | C．universal | D．original |
Prices of daily goods ___________ through a computer can be lower than store prices.
| A．are bought | B．bought | C．been bought | D．buying |
Courage is a kind of quality --- and that’s __________it takes to face the challenges in life.
| A．that | B．which | C．why | D．what |
Don’t be afraid of asking for help ___________ it is needed.
| A．unless | B．since | C．when | D．although |
___________ time, she will make a first-class tennis player like LiNa.
| A．Having given | B．To give | C．Giving | D．Given |
Jim passed the final exam, ___________ surprised his classmates and parents.
| A．that | B．which | C．this | D．it |