The boy’s dream was to have his own laboratory ________ to try out some of his own ideas.
| A．from which | B．in which |
| C．by which | D．at which |
Doris' success lies in the fact _______ she is co-operative and eager to learn from others.
| A．which | B．that | C．when | D．why |
See the flags on top of the building? That was _______ we did this morning.
| A．when | B．which | C．where | D．What |
_______ makes his shop different is that it offers more personal services.
| A．What | B．Who | C．Whatever | D．Whoever |
see the flags on top of the building? that was____ we did this morning.
| A．when | B．which | C．where | D．what |
____makes this shop different is that it offers more personal services.
| A．what | B．who | C．whatever | D．whoever |