Over the past five years we ___(do)nothing,so we must _____(do)something that we can____(do) now.

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/19 11:20:58
Over the past five years we ___(do)nothing,so we must _____(do)something that we can____(do) now.

Over the past five years we ___(do)nothing,so we must _____(do)something that we can____(do) now.
Over the past five years we ___(do)nothing,so we must _____(do)something that we can____(do) now.

Over the past five years we ___(do)nothing,so we must _____(do)something that we can____(do) now.
have done Over/in/during the past five years 是现在完成时的标志
do
do

did,do,do

did do do