(1)l really look forward to ______(be) friends with you(2)l'm sure that it won't take them a long time_____(build) their new houses

问题描述:

(1)l really look forward to ______(be) friends with you
(2)l'm sure that it won't take them a long time_____(build) their new houses

(1)being 原因:look forward to doing.
(2)to build 原因:it take sb some time/money to do sth.

being, to build

1.being
固定短语:look forward to doing sth 期盼/盼望做某事
2.to build
固定句型:it take sb some time to do sth 花费某人多少时间做某事

being
to build