Complete the following passage by choosing the correct options from those given below.
Electronic commerce, it seems, still has (a) ______ limits, even in the Silicon Valley. For all the feverish excitement (b) ______ the tripling of electronic shopping last holiday season, the total money (c) ______ by American consumers online still (d) ______ to only about one percent of its total sales-barely a tenth (e) ______ the revenues from (f) ______ method of distance selling that has been (g) ______ for a century; the catalogue. This may be because electronic shopping (h) ______ on quite a narrow range of goods, mainly books, toys and music. Worse, there (i) ______ many stories of failed and late deliveries. And, more recently, a string of hackers’ attacks (j) ______ temporarily disabled some of the best-known e-commerce websites.
(a) (i) their (ii)a (iii) the (iv) its
(b) (i) about (ii) of (iii) in (iv) for
(c) (i) spend (ii) spending (iii) spent (iv) being spent
(d) (i) amount (ii) amounted (iii) amounts (iv) amounting
(e) (i) of (ii) for (iii) by (iv) for
(f) (i) another (ii) other (iii) some (iv) the other
(g) (i) user (ii) used (iii) uses (iv) in use
(h) (i) concentrated (ii) is concentrating (iii) was concentrated (iv) had concentrated
(i) (i) were (ii) have been (iii) has been (iv) was
(j) (i) has (ii) have (iii) having (iv) had
