My suggestion is ()we should have mercy ()these homeless children and offer them some help.

单项选择题Come on, Harry, why stand there alone We'll go to play ballgames. How about () us

A．taking part in
B．joining
C．joining in
D．attending

单项选择题All of the following can describe (描述) the writer’s grandfather EXCEPT ().

A．kind
B．selfless
C．strict
D．helpful

单项选择题The underlined word they in the last paragraph refers to ().

A．criminals
B．pigeons
C．the stolen cars
D．demands for money

单项选择题The scientists were in search for minerals by using ().

A．X-ray
B．trees and plants
C．a special instrument
D．trained eyes

单项选择题Which of the following is not mentioned as part of tree that can help find minerals()

A．Leaves.
B．Roots.
C．Branches.
D．Seeds.