Question

问几道英语题啊~~急的很~~~~~~

1.After these words,they______(set off)searching the lost teammate.
2.My gradeparents never knew that population __________(be)the biggest problem
3.I ______already ______(get)up.Let's meet at rhe supermarket.
4.We ___________our breakfast when an old man came to the door.
A.just have had B.have just had. C.just had D.had just had
5.Until then,his family_________from him for six months.
A.didn't hear B.hasn't been hearing C.hasn‘t heard D.hadn’t heard
如果可以 请翻译下！！~~~~~~~~~~~
各位英语高手来帮帮我 吧~~~~~~~~~~~~~~感激 ·~~·~~~~············~~~~~~~~

Answer 1

1 说完这些话，他们出发去寻找失踪的队友。set off
2我祖父母从不知道人口是个很大的问题。was
3我已经起床了，让我们在超市碰面吧。had got up
4当老人来时，我们已经吃完早饭了。 D.had just had
5直到那时，他的家人已经六个月没有他的消息了。B.hasn't been hearing

Answer 2

set off is have got up D D
说完这些话，他们动身去搜寻失踪的队友
我祖父母从来不知道人口是个大问题
我已经起床了，咱们超市见
当老人来时，我们刚吃完饭
当那时为止，他们已经6个月没收到他的信了

Answer 3

set off/was/have gotten/D/B手机回答不方便翻译，请见谅

Answer 4

楼上回答第二题应该是:was