关于环境与发展的说法正确的是( )
You waste much time______pig flu.on the internet..
---- Is there a vaccine _____ pig influenza?, I’m anxious to know. ----- Don’t worry, there is a vaccine _____ for pigs against pig influenza
Has she had a cold like pig flu. _____? for she is absent.
The teacher criticize me, so I must finish my essay about agriculture,farmer and rural areas today______.
----- Would you like to climb the Mountain Tai on May Day? _____, I’d like to.