According to a new study by a British university, learning __________ second language can lead to __________ increase in your brain power.
| A．a; the | B．a; an | C．不填; the | D．the; an |
Before writing your answer, please give careful __ to the question．
| A．consideration | B．translation | C．examination | D．expression |
Helping others is a habit,you can learn even at an early age
| A．it | B．which | C．what | D．that |
—How much do I owe you for lunch?
—.It ' s nothing．
| A．You're welcome | B．Not at all | C．Forget it | D．That's right |
Correct the errors in the following sentences, if.
| A．not | B．necessary | C．any | D．ever |
It was ________ fun to play on the beach that it attracted countless children.
| A．so great | B．such great | C．such a great | D．so great a |