The problem is so complex that I'm afraid it will take me several hours to________．
A．figure out B．set out
C．break out D．put out
The newlylearnt words will be impressed on us only if they are ________used in everyday communication．
A．gradually B．accurately
C．familiarly D．frequently
The car's________ has improved a lot since a new engine has been applied to it．
A．character B．performance
C．appearance D．attraction
How________ you expect to get something in return when you never willingly lend a hand to others?
A．shall B．can C．should D．dare
--- Alice is moving to her new apartment next Saturday． --- I would be glad to help her，________ need some help．
A．if she might B．if she will
C．if she D．should she
________that the government can clear up official corruption，we are________ about the future of our country．
A．Convinced；optimistic B．Convincing；optimistic
C．Convinced；pessimistic D．Convincing；pessimistic
