There has never been such a good time to do this. Never before ___ such a good time to do this.
has there been
We have rarely seen weather like this in October. Rarely ___ weather like this in October.
have we seen
I in no way want to be associated with this project. In no way ___ to be associated with this project.
do I want
He understood little about the situation. Little ___ about the situation.
did he understand
I really didn't expect a reaction like this. In no way ___ a reaction like this.
did I expect
People can rarely photograph the Amur leopard. Rarely ___ the Amur leopard.
can people photograph
I didn't realize at the time how soon I'd need your help. Little ___ at the time how soon I'd need your help.
did I realize
I didn't know at that moment that my life was about to change. Little ___ at that moment that my life was about to change.
did I know
The film started just as we found our seats. No sooner ___ our seats than the film started.
had we found
I have never seen anything like it. Never ___ anything like it.
have I seen