未被授予专利权的专利申请也可以做广告。（）
参考答案：错
分红派息的形式主要有现金股利和存款股利两种方式。( )
--- Has your brother returned from the USA yet?
---- Yes, but he ____ here for only two days before his company sent him to Australia.
A．stayed
B．has stayed
C．will stay
D．was staying
