New iPhone goes on sale on Friday with ________ bigger screen and 4G wireless technology, as ________ company seeks to keep its competitiveness.
| A．a ; a | B．a ; the | C．the ; the | D．the ; a |
________ they become dirty, the lakes are not able to clean themselves
| A．Once | B．Since | C．As | D．Because |
I think he is ________ to win, but I’m not sure.
| A．possible | B．likely | C．probably | D．certain |
The weather turned out to be fine yesterday, I _____ the trouble to carry my umbrella with me.
| A．should have taken | B．could have taken |
| C．needn’t have taken | D．mustn’t have taken |
They ______ a tent and got ready for the night when evening came.
| A．put off | B．put up | C．put on | D．put out |
–Did you go to the show last night?
–Yeah. Every boy and girl in the area _______ invited.
| A．were | B．have been | C．has been | D．was |