a. Currently

b. Usually

c. Eventually

d. Quickly

a. Too

b. To

c. Very

d. Well

a. Quickly

b. Quietly

c. Incredibly

d. Eventually

a. This is the boy who has stolen my pen

b. This is the book that I have bought

c. Look at this child whose parents are dead

d. Jack who is engineer build this bridge

a. Am/ is/are+ past participle

b. Am/ is/are+ present participle

c. Am/ is/are+being+ past participle

d. Root verb/root verb+s