________ he has limited technical knowledge, the old worker has a lot of experience.
| A．Since | B．Unless | C．As | D．Although |
I will give you my friend's home address，__________Ican be reached most evenings.
| A．which | B．when | C．whom | D．where |
Alice received an invitation from her boss，__________ came as a surprise.
| A．it | B．that | C．which | D．he |
The school is divided into two semesters, the first of__________is September through December, and thesecond January through May.
| A．what | B．that | C．which | D．one |
My friend showed me round the town，__________wasvery kind of him.
| A．which | B．that | C．where | D．it |
Between the two parts of the con-cert is an interval，__________ the audience can buy ice-cream.
| A．when | B．where | C．that | D．which |