At the end of the class, the teacher _______ the main points of the lesson in three sentences.
| A．summed up | B．picked up | C．brought up | D．took up |
—Do you know the differences ________ the three words? --Sorry, I don’t know.
| A．among | B．between | C．with | D．about |
_______ my parents’ help, I begin to catch up _______ my classmates.
| A．With, to | B．Under, with | C．With, with | D．To, to |
The dinosaur’s eggs are found by explorers in the _______
| A．1920s | B．1920’s | C．1920s’ | D．1920’ |
The boys always stays here for _________>
| A．one and half hour | B．one and half a hour |
| C．one and a half hours | D．one and half hours |
Lucy has been to _________ many times this year.
A. his uncle b. her uncles C. uncle’s D. her uncle’s