为防止雨水沿墙边渗透，除将圈梁或过量作在雨蓬板上部外，尚须将防水砂浆沿墙身粉至墙面上200mm处，形成

问答题Had I known the result, I (not ask) you about it.

问答题The train to Lots Angers (delay) by fog and arrived late.

问答题You may ask for his help, sometimes his (suggest) will perfect your design.

问答题He estimates that the (develop) of this industry will take several years.

问答题My mother insisted that I (return) home before nine o’clock.