I’m certain David’s told you his business trouble. ________, it’s no secret that he owes a lot of money to the bank..

A. However        B. Anyway         C. Therefore       D. Though

Letterboxes are much more _______ in the UK than in the US, where most people have a mailbox instead.

A. common         B. ordinary         C. normal           D. usual

______ is know to us all, good friends ______ happiness and value to our life.

A. It; add          B. As; add up       C. It; add up       D. As; add

Eric received training in computer for one year, _______ he found a job in a big company.

A. after that         B. after it          C. after which        D. after this

I have no doubt in my mind______ they will be glad to see me.

A. if            B. whether      C. that           D. about

--- What did he say?   ---- He said he ________ the sentence in his own words.

A. was considering to explain         B. considered how to explaining

C. would consider to explain          D. was considering explaining

My sister______ the League last month and she has decided to ______ the activity to help the aged next week.

A. joined; join in    B. took part in; join  C. joined; attend    D. joined in; join in

The father as well as his three children________ skating on the frozen river every Sunday afternoon.

A. is going         B. go               C. goes             D. are going

The professor sort of dislikes the student, because he always asks some questions that have nothing to _______ his lessons.

A. deal with        B. do with       C. connecting with    D. go with

--- It was not until she had arrived home _________ her appointment with the doctor.

A. when she remembered                  B. that she remembered 

C. did she remember                      D. and she remembered