This planted by my great-grandfather half a century ago. a) was b)was being c)had been this sort of seen everywhere. a) has been b) is being c) is sent to all our clients every week. a) have been b) be being c) are taken to hospital only tomorrow. a)is b) will be c)is being the by an american architect last year. a) was being b)was c)is

This tree was planted by my great-grandfather half a century ago.
 a) was b)was being c)had been
This sort of advertisement is being seen everywhere.
a) has been b) is being c) is
Letters are sent to all our clients every week.
 a) have been b) be being c) are
Clare will be taken to hospital only tomorrow.
a)is b) will be c)is being 
The building was built by an American architect last year.
a) was being b)was c)is