.---You may find the key to the maths problem on page 107 . ---Ah, it’s so simple . I wonder why I of that .
Please post this letter in the post office nearby, and ______, I will get two tickets in the train station.
Many people are not________the danger of their children's bad habits, which lead to failing to make their dreams come true.
A family of five is really a heavy burden, so we all have to work hard to________.
Such animals like dinosaurs died out because they couldn’t _____ to the change of the climate.
I like getting up very early in summer.The morning air is so good _____.