. Now and then they would ______ our house and have a talk with us.
| A．call on | B．drop in at | C．drop in on | D．drop in |
Mr. Johnson starts to work very early in the morning and goes on working until late in the afternoon ________a break at midday.
| A．with |
| B．for |
| C．as |
| D．through |
The U.S. official said North Korea and Iran should follow in the steps of Libya, which last December said it would work__________ to allow international weapons inspectors to do their work.
| A．unconditionally |
| B．unwillingly |
| C．unfortunately |
| D．uncomfortably |
_____ your son has no interest in piano ,there is no _____ pushing him to learn it.
A Now that；point
B So that；point
C Even if；need
D As if；need
The famous orchestra, which was composed by the four young musicians, is _______ into four parts according to the folk songs.
| A．picked up |
| B．given up |
| C．turned up |
| D．split up |
___________ couldn’t help stopping to listen to the blind performer’s wonderful music and leaving him some ___________.
| A．Passer-bys; changes |
| B．Passers-by; change |
| C．Passer-bys; change |
| D．Passers-by; changes |