He will give me a message when he ________ arrive there.
– What else should we pay attention to _______ building the bridge? --The change of the weather, I think.
— Jack, could you tell mefor travelling this summer? —We plan to go and see the beautiful sea in Hainan.
When he first went there, Jim had difficulty____the new hotel, so he asked the policeman ___help.
When David is in a bad mood, he likes wearing orange to _______.
– Finish your homework, ________ you can't watch TV, Jim. – All right. Mum.