Your help has made my stay here ....... and successful.

My stay here has been very enjoyable and productive.

A、我逗留期间工作效率太高了!
B、在这逗留期间我很开心也很富有成效。
C、我待在这期间我感觉很有意义!
D、我喜欢待在这儿,这里让我太高兴了!

My name is Mike and I will be your local guide _______ your stay here.

A、when
B、as
C、during
D、with

Your great help made my journey fruitful and _________(值得的)．

()your help we were successful.

A、 According to
B、 But for
C、 Owing to
D、 As for