Hewouldhavegivenyoumorehelp,ifhe________sobusy.
A、havenotbeen
B、hadnotbeen
C、nothavebeen
D、nothadbeen
A、8-10个月
B、10-12个月
C、12-18个月
D、18-24个月
Williamhascuthissmoking_____tofivecigarettesaday.
A、down
B、short
C、away
D、off
句子写作：Mypresentationseemedtogowell.
Hecomplainedtothebooksellerthattherewereseveralpages______inthebook.
A、losing
B、missing
C、dropping
D、lacking