We were swimming in the lake__________suddenly the storm started.

When ________ what his problem was, the boy lowered his head and kept silent[ ]

They are so busy that they have no time to do any sports, ______they need to do so.

下列对联与传统节日、名胜古迹对应正确的一组是①玉宇无尘一轮月 银花有艳万点灯②海上蟾生情共寄 天边鸟倦念当归③后乐先忧，范希文庶几知道 昔闻今上，杜少陵可以言诗④瑞霭浮山，画阁又开洪府宴 韵光流水，绮文永耀子安才

We _____ London on 15 July, and we’ll be taking a flight to Morocco, in northern Africa.