题目内容：

He has rung me up four times .He began to ring me at 11:00.(用since 合并句子)
It rains .I go to the park .(用 if将两句连成一句合乎逻辑的话)
The government forbade drinking two years ago .(改为被动语态）

优质解答

Since 11;00,he has rung me up four times.
If it rains ,I will go to the park.
Drinking was forbidden by the government two years ago
记得因为forbade是过去式,原形是forbid,所以谓语动词在被动态中应该是was