d likeyou to my birthday party,but I was busy and forgot to call you.

David_________the test for further studyin the USA Let’s have a small party to congratulate him on his success

____is known to us all,,things can easily go wrong when people are under______.

_______is really difficult for them_______the mountain.

When you are physically _________ to weather changes, maybe it’s a sign that you’re getting aged.