I have old pen and my brother has________new one.A.a, an B.an, a C.a, a
– Are those your friends ? – ________.
Mum, _______ my teacher, Miss Gao.
Mr. Lee is ________ teacher. ________ is from China.
熟人之间见面时表示礼貌的常用语是_________
– How are you ? – Fine, thanks. _______ – I’m OK.