The theory ______ by Einstein was later to prove true, but at that time few people could accept it.

1. A.
   put out
2. B.
   put together
3. C.
   put aside
4. D.
   put forward

The theory ________ by Einstein was later to prove true, but at that time few people could accept it.

A．put out    B．put together    C．put aside        D．put forward

The theory _____ by Einstein was later to prove true, but at that time few people could accept it .

A. put out   B. put together    C. put aside     D. put forward

The theory________by Einstein was later to prove true, but at that time few people could accept it .

A. put out   B. put together    C. put aside     D. put forward

The theory ________ by Einstein was later to prove true, but at that time few people could accept it.

A．put out                    B．put together             C．put aside                 D．put forward