人体吸入的气体中，含量最高的是氧气；呼出的气体中，含量最高的是二氧化碳。（ ）
×
无论吸入的还是呼出的气体，含量最高的应该是氮气。
“I hope _________ play soccer with us tomorrow. ”
-- “Yes, I hope _________. ”
A．him not to, not too
B．he won’t, it too
C．him not to, that too
D．he won’t, so too
—Where is Tom ?
—Well , he you here . Otherwise he would come down right now .
A．didn’t know ; were
B．hasn’t known ; are
C．doesn’t know ; are
D．hadn’t known ; were
