问题标题:
全文是个任务型阅读.只有这两个空了.Thejourneywill(_)onabout15monthsandtheywillpayavisitto(_)tosixteencountries.<我觉得根据是这句:Theexpecttobegintheirtripthisfall.Itwilllastabout15mon
问题描述:

全文是个任务型阅读.只有这两个空了.

Thejourneywill(_)onabout15monthsandtheywillpayavisitto(_)tosixteencountries.

<我觉得根据是这句:Theexpecttobegintheirtripthisfall.Itwilllastabout15monthsandtheteamwilltravelto16countries.>

倪赵敏回答:
  保证准确率!   1.go   goon=last持续   2.up   upto...直到...
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