My life has (变化)a lot in the last few years.
I just hid behind my father and never (说)anything.
Of the two boys,who do you think is more (仔细)?
I have no problem (爬)the mountain,which is not too high.
When you visit a foreign country,it is necessary to know how to ask for help (礼貌地).
假如你养成阅读的好习惯,你会受益终生. (get into the habit of doing sth.)