问题

What’s your question —I want to know _________.

A:how can treeshelp us
B:how do treeshelp us
C:how treeshelp us
D:how can wehelp trees

正确答案是：

同类题型

(2013·福建高考)The Forbidden City attracts a ________ stream of visitors every day, especially during national holidays.

I spent three hours buying a train ticket at the railway station the other day .– Why You __________ one on the Internet or by phone .

Jack likes doing kung fu on weekends. Mike likesit.

Most birds find it safe to sleep in the trees, but ______ they have eggs or young chicks, they don’t use a nest

下列词语中，字形与加线字的读音全都正确的一组是(　　)