单项选择题
A．problems B．themselves C．excuses D．joy
21()A．despiteB．regardlessC．becauseD．on account
单项选择题21()
A．despite B．regardless C．because D．on account
—I was pleased to hear the news. --So ______.A．do IB．am...
单项选择题—I was pleased to hear the news. --So ______.
It's very informal here, you ______ wear a tie unless y...
单项选择题It's very informal here, you ______ wear a tie unless you want to.
