根据句子意思，用括号中所给单词的适当形式填空。
小题1:For her ▲ (twelve) birthday, Jenny invited her teachers and classmates to her house.
小题2:—How was your visit to Nanjing Confucius Temple at the weekend?
—Wonderful! My parents and I enjoyed ▲ (we) very much there.
小题3:After several ▲ (week) study, the American students found Chinese interesting to learn.
小题4:You can see the ▲ ( happy) on her face because she can’t find her lovely cat.
小题5:When a little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much ▲ (easy).
小题6:—May Day is coming, would you like to go ▲ (climb) with us?
—Why not, I’d love to go to Zijin Mountain.
小题1:twelfth
小题2:ourselves
小题3:weeks’
小题4:unhappiness
小题5:more easily
小题6:climbing
小题1:考查序数词。第十二个生日，应该用序数词。Twelve的序数词形式是twelfth。故填twelfth。
小题2:考查固定短语。enjoy oneself“玩的开心”。根据we可知，应该用复数形式ourselves。故填ourselves。
小题3:考查名词所有格。名词要先变复数，再加“’”。故填weeks’。
小题4:考查名词形式。根据can’t find可知，是不开心。happiness“开心”，反义词是unhappiness。故填unhappiness。
小题5:考查比较级。修饰动词become用副词，easily的比较级是在前面加more。故填more easily。
小题6:考查固定短语。go+doing表示“去做某事”。故填climbing。