英语题目 同义句转换 1.It's very easy for me to find his office. I had ____ ____ ____ his office.1.It's very easy for me to find his office. I had ____ ____ ____ his office. 2.China joined the WTO in 2001. China ___ ___ a member of the WTO for 7 years.????第二题两个答案都可以吗？

1 I had no trouble/difficulty finding his office.
2 China has been a member of the WTO for 7 years.

no difficult finding
has been

1.never missed of
2.had been/become

1.It's very easy for me to find his office.
I had __no__difficult ____ __finding__ his office.
2.China joined the WTO in 2001.
China _has__ been ___ a member of the WTO for 7 years.

1、no trouble/difficult finding
2、has been
补充：第二题只能填has become.
理由：become 是瞬间动词,不能与一段时间连用,所以用has been.