Question

【题目】—Mum, _____ my friends,Li Ning and Wang Tao.
—Nice to meet you. Please come in.
A.this is
B.that is
C.they are
D.these are

Answer 1

【答案】D
【解析】句意：—妈妈，这是我的朋友李宁和王涛。—遇见你很高兴，请进来。向别人做介绍时用：this is…（介绍的是一个人时用）；these are…（介绍的是两个人以上时用）。故选D。