______ the help of the teacher, the student who wasn’t good at math ______ the difficult problem quickly.
| A．Under; worked out | B．With; worked on |
| C．Under; solved | D．With; solved |
I was going to offer you some money but there’s _________ left on me.
| A．none | B．no one | C．nothing | D．no any |
Children under 12 years of age in that country _________ be under adult supervision（监管）when in a public library.
| A．must | B．may | C．can | D．need |
---–Who is the girl standing over there?
-----Well, if you _________ know, her name is Mabel.
| A．may | B．can | C．must | D．shall |
Because I’ve something important to do, I can’t come to see you this evening, ____ I’d like to.
| A．much as | B．much so | C．as much | D．so much |
. –Have you finished designing a dress?
--________ finished but there’s still something to improve.
| A．Sooner or later | B．More or less | C．At times | D．Once in a while |