单项选择题

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Many years ago when the summers seemed longer and life was less complicated, we had rented a cottage (26) a river in the heart of the country (27) the whole family was going to (28) a three-week holiday. There were four of us: me, Mum and Dad, and Mum’s sister, Auntie June. Oh, and I mustn’t forget to (29) . Spot, our little dog. I was (30) to go off by myself all day, (31) I promised to be careful and took Spot with me for (32) .
One day I was out fishing with Spot when we heard a lot of shouting in the (33) followed by a scream and splash. I was a bit (34) so I called Spot and we both hid (35) a bush where we could see but not be (36) . After a few moments, a straw hat came drifting down the river, followed by an oar, a picnic basket and (37) oar. Then came the rowing boat itself, but it was (38) upside down! A few seconds later my dad and Auntie June came running (39) the river bank, both wet (40) . Spot started barking so I came out of hiding and said hello. My dad got really angry (41) me for not trying to catch the boat as it went past. Luckily, (42) , the boat and both the oars had been caught by an overhanging tree a little further downstream, but not the hat or picnic basket. So I had to let them (43) my sandwiches. Dad and Auntie June both made me (44) not to tell Mum what had happened (45) she would be worried.

A.to
B.beside
C.down
D.on