ركن السؤال و الأجابة 2

[LinuxForEver]

جزاك الله خيرا أستاذنا على جهد حضرتك معانا
FTM

1- He promised he will phone me as soon as the train arrived in Cairo.

Is " arrived-->arrives " correct
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2- Unless your help, I would have missed my plane

Is " Unless --> without "

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Advanced Level

Rewrite
1- There has been a lot of research into cancer in the last fifty years. (doing

Is " Scientists have been doing a lot of .... " correct
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2- It was a great honour for our factory when the president visited it. ( honoured)