There are many problems wait for people to solve and theses problems are tough.
选项:
A:Many tough problems are waiting for people to solve.
B:Many problems are waiting for people to solve and these problems are tough.
C:Many problems which are tough are waiting for people to solve.
D:Many problems are waiting for people to solve even though they are tough.
发布时间:2024-05-07 22:18:09