This book is worth [u] [/u] .
未知类型：{'label': 'questionDesc', 'content': '请选择正确答案。', 'isMemberControl': 0, 'type': 181}
A: to read
B: reads
C: read
D: reading
未知类型：{'label': 'questionDesc', 'content': '请选择正确答案。', 'isMemberControl': 0, 'type': 181}
A: to read
B: reads
C: read
D: reading
举一反三
- He's read this book before， [u] [/u] ? 未知类型：{'label': 'questionDesc', 'content': '请选择正确答案。', 'isMemberControl': 0, 'type': 181} A: hasn't he B: doesn't he C: isn't he
- He was reading a book[u] [/u]his mother came in. 未知类型：{'label': 'questionDesc', 'content': '请选择正确答案', 'isMemberControl': 0, 'type': 181} A: when B: where C: what
- He was reading a book[u] [/u]his mother came in. 未知类型：{'label': 'questionDesc', 'content': '请选择正确答案', 'isMemberControl': 0, 'type': 181} A: when B: where C: what
- Jim has[u] [/u]useful book. [u] [/u]book is very interesting. 未知类型：{'label': 'questionDesc', 'content': '请选择正确答案。', 'isMemberControl': 0, 'type': 181} A: the; A B: an; A C: a; The D: an; The
- Seeing [u] [/u] believing. 未知类型：{'label': 'questionDesc', 'content': '请选择正确答案。', 'isMemberControl': 0, 'type': 181} A: be B: are C: was D: is