词汇和语法五个.就是选择填空.
1、i am not used to speaking (in at on to ) public .
2、(before at in between )the war of independence ,the united states was an english colony .
3、mathematics (is are was were )study or science of numbers .
4、i have been looking forward to (hear /being heard / be heard /hearing )from my parents .
5、when the railway is completed .we (can /could /are able to /will be able to )get to town much easily .